Mechanical Engineering

1. Development and analysis of the new solution of the vibratory conveyor intended for the accurate dosing of the transported material.

Supervisor: dr hab. inż. Piotr Czubak
Auxiliary supervisor:
dr inż. Łukasz Bednarski

Department of Mechanics and Vibroacoustics, Faculty of Mechanical Engineering and Robotics, AGH University of Science and Technology

Abstract: The research problem concerns the determination of the influence of structural parameters of the new type vibratory conveyor on the feed transport process and its stopping, as well as of their influence on the conveyor yield. Especially essential are investigations of effects occurring in the point of stopping the transport, due to the need of the accurate dosing of transported materials in industrial processes.

The main qualitative aspect will constitute the analysis of the vibratory conveyor, for which the patent application was submitted, used for transporting - with a variable speed - loose materials or objects of small dimensions. This vibratory conveyor has a possibility of the immediate stopping of feed transportation without the necessity of the drive switching off.

Up to the present, these types of solutions were realised by means of expensive electromagnetic excitations. The conveyor excited for vibrations by means of much cheaper and often applied electro-vibrator will be analysed, in the hereby study. So far, this type of solution was not applied in the industry to stop the transport of the conveyor, which is very important at interrupted operations, especially at the feed dosage. This solution will provide a possibility of designing cheap production lines, in which the conveyor will realise not only the continuous transport. The task of the doctoral candidate will constitute the determination of the structural parameters influence on the dynamics of the new conveyor as well as the determination of their influence on the assumed suitability for the accurate feed transport and dosing. On the grounds of the obtained results the real model of the conveyor will be built. It will be subjected to laboratory tests and - in assumption - also to industrial tests. The doctoral dissertation effects will be creating the recommendations allowing to design conveyors according to the assumed requirements.

Research facilities:Research facilities available for the realisation of the research project constitutes the reach research equipment of the Department of Mechanics and Vibroacoustics of AGH, especially the scientific vibro-technique laboratory, destined for performing research investigations concerning the dynamics of vibratory machines. This Laboratory allows theoretical modelling of vibratory processes, numerical calculations and the verification of results on research set-ups. The Laboratory is equipped with 10 research set-ups, out of which 4 are destined for investigating vibratory conveyors. The measuring equipment allows for a complete dynamic recording of performed experiments. In addition, within the doctoral study, the research model of the vibratory conveyor, for which the patent application was submitted, will be built.

Number of places: 2

 

2. Modeling and implementation of heat and cool storage system based on phase change materials

Supervisor: Prof. dr hab. inż. Tadeusz Uhl

Faculty of Mechanical Engineering and Robotics, laboratories of AGH UST Centre of Energy

Abstract: Energy efficiency is one of the mostly use parametr for assessment of quality of assets and installations dedicated for energy production. To assess efficiency in proper way, the head and electricty should be considered. Proposed reseach delas with modeling and implementation of systems for storage of heat and cool with application of phase change materials (PCM). The LHS phenomena is a base for energy storage mechanism. The reasearch will be focuesed on pahse change from solid state to fluid state in which change of volume not exceed 10%. Research problem which will be under consideration is change of thermal isolation of PCM material during chane of phase, which limites heat exchange during operation of heat storage system. The second problem will be decreasing of mass of energy storage units for mobile application.

Research methodology is based on modelling and simulation of PCM and experimental testing on laboratory rigs. One of proposal to decrease change of thermal isolation is add additives to PCM to produce grains instead of solid materials on heat exchenger walls.

Research facilities: Center of Energy AGH has laboratory for testing of energy storage systems in area of heat and cool. Experimental rig for cool storage is build as climatic chamber with walls of big tehrmal isolation, but sixth wall, which is testef is monted during tests. Labolatory is equiped with different PCM materials which will be used for design of wall structures. As measurement system, the lab is equiped with multisensor temperature measurement system and heat flow. Experimental rig for testing of heat storage system is built as technology demonstrator in form of hull for PCM materials with heat exchenger. For modeling of phase change materials and phenomena of latent heat the COMSOL software will be applied. Research will be financed from two projects in CE; one for Wielton SA, but the second for Enetech company.

Number of places: 1

 

3. Development and analysis of a new solution in embedded systems dedicated to diagnostics and control of motor vehicles.

Supervisor: dr hab. inż. Bartłomiej Borkowski

Auxiliary supervisor: dr inż. Paweł Pawlik
Department of Mechanics and Vibroacoustics, Faculty of Mechanical Engineering and Robotics,

Abstract:The research problem is the influence of using new solutions in the cars on-board electronics’ embedded systems. The examination of new solutions reliability and integration possibility as well as the ability to upgrade currently used functionalities in matter of vehicles diagnostics and specific operating processes controlling will be of particular importance.

The main responsibility and quality indicator will be to propose an improvement in the security of information flow between modules and the storage of sensitive and crucial data. Commonly used communication protocols do not include encryption and they have only basic transmission protection functions. Moreover, the general and specific cybersecurity analysis is not conducted in new solutions. An attempt to implement mechanisms ensuring data transmission security will be undertaken in this research. This solution will be competitive in automotive industry.

Doctoral students assignment will be to determine the possibilities to implement additional application layers in the currently existing systems that would raise the level of security and to propose procedures of embedded system safety study and develop protection of existing solutions. Guidelines for designing new systems will be created as a part of the assignment.

Research facilities: The research facilities available for the implementation of the scientific project are the extensive equipment of the Department of Mechanics and Vibroacoustic at the AGH University of Science and Technology, in particular the laboratories of diagnostics and monitoring systems, which are predisposed to carry out work on the proposed subject.

The laboratory enables conducting works in the field of theoretical modeling and data processing recording and distribution. In addition, the Department of Mechanics and Vibroacoustic has two computing servers and a computer laboratory equipped with 8 stations that can be used to test the stability and safety of the control system. Moreover, the laboratory is equipped with 15 sets of microcomputers. Testing the ready solution can be carried out in the laboratory of internal combustion engines with which the dissertation supervisor has been cooperating for years.

Number of places: 1

 

4. An application of machine learning algorithms in increasing the effectiveness of the pipe cracks identification on the basis of the waves propagation theory.

Supervisor: dr hab. inż. Bartłomiej Borkowski

Department of Mechanics and Vibroacoustics, Faculty of Mechanical Engineering and Robotics,

Abstract: The research problem concerns determining possible applications of artificial intelligence in the field of pipe diagnostics. It will be significant to test fusion capabilities of machine learning algorithms with existing solutions and the analysis of possible functional enhancements of already implemented solutions in this area.

The importance of diagnostics in pipe exploitation can be shown by taking BP p.l.c. as an example. Negligence in this field has led to the Deepwater Horizon oil spill on April 20, 2010. The main consequences of this incident were ecological disaster and death of eleven workers.

The main quality concern of the thesis will be to offer the usage of artificial intelligence to identify cracks in various working conditions. It will be important when we take the change of the wave propagation inside of steel pipes into account. Commonly used pipe cracks identification and classification systems do not use these kind of mechanisms.

The thesis will be an attempt to implement and test machine learning algorithms in diagnostics using contact or contactless methods. The proposed solution will be competitive in diagnostics field due to the automation of both data acquisition and data analysis

Postgraduate’s assignment will be focused on the possible implementation of additional application layers in existing solutions, which will result in faster and more accurate classifications and damage predictions.

Research facilities: A research facility available during the project implementation is an equipment of the Department of Mechanics and Vibroacoustics of the AGH University of Science and Technology, especially the laboratory of diagnostics and monitoring systems. It is the most suitable for conducting a research in this field of study.

The laboratory enables conducting a research regarding theoretical modeling, recording of data processing and data distribution. Moreover Department of Mechanics and Vibroacoustics has two computing servers and computer room equipped with 8 workstations, which can be used to test the stability and speed of the diagnostic system. Additionally, laboratory is equipped with 15 microcontroller sets. Testing of the finished product can be conducted in the technical diagnostics laboratory, or the BFIRST.TECH laboratory which is a company that the supervisor is working with. In department’s laboratory any damages of the examined samples can be simulated. Working system will be tested in real conditions, in BFIRST.TECH laboratory.

As a part of doctorate research model will be build, based on the solution proposed in a thesis.

Number of places: 1

 

5. Development of a new generation acoustic emission sensors employing full-wavefield capture and spatial filtration

Supervisor: dr hab. inż. Paweł Paćko, prof. AGH

Faculty of Mechanical Engineering and Robotics, laboratories of AGH UST Centre of Energy

Abstract: Acoustic emission testing is widely used for structural monitoring of critical structures for the past few decades. Despite its considerable success and reliability, a number of issues – compromising accuracy and robustness – can be noted. One of the major ones is related to classical AE systems inability to resolve multimodal wavefields, present in guiding structures (e.g. plates). On average, approximately 60% of acquired AE signals turn useless due to the mismatch between the assumed (by the operator) and the actual wave speeds of various wave modes. The goal of the proposed research is the development and application of a new generation of multi-transducer acoustic emission sensors for accurate detection and identification of AE sources. The latter is going to be achieved through spatial filtration techniques and by employing localization methods that do not require the knowledge of material properties of the structure (hence, no calibration is required). The scope of the work is related to the development of new piezoelectric microsensors and their integration into a single multi-transducer sensor device. The topology of microsensors will be designed in order to facilitate spatial filtration of different wave modes and detection of the incident wave direction. A part of the project will be devoted to the development of signal processing techniques allowing robust filtration (including noise filtration) and source identification. Finally, it is proposed to design and employ elastic metamaterials for passive elements of the sensors (e.g. matching and/or bonding layers) for mechanical selective filtration of wave modes.

Research facilities: Both the unit and the supervisor publication record provide a solid background for the proposed research topic. Publications in the area of wave propagation, sensor design and development, acoustic emission analysis and source localization, have appeared in the most prestigious international journals. The supervisor took part in two broad projects, funded by NCBiR and NCN, directly related to the proposed research topics, namely a nonclassical approach to analysis of AE phenomena and design of new sensors for elastic waves. The supervisor has led two projects funded by NCBiR related to modeling and development of acoustical devices and is the leader of a new project devoted to nonlinear metamaterials. The unit is equipped with highly advanced hardware for measurements of dynamic characteristics of sensors, including spectrum and impedance analyzers and laser vibrometers (including lasers combined with microscope systems for analyzing small-scale devices). The unit also offers professional, market systems for AE testing. The proposed research will be conducted with the financial and scientific support of the Office of Technical Inspection within the Operation Safety cluster.

Number of places: 1

 

6. Application of dynamic conditions “digital twins” technology for monitoring of lifting devices

Supervisor: dr hab. inż Krzysztof Mendrok

Faculty of Mechanical Engineering and Robotics, laboratories of AGH UST Centre of Energy

 

Abstract: The doctoral thesis will concern the development of a monitoring procedure for a lifting device. Monitoring will be aimed at detecting and locating structural changes as well as recording loads acting on selected structural elements. Both tasks will be implemented by a network of accelerometers or strain gauges, possibly other non-contact sensors - research on the effectiveness of the proposed solutions will form part of the PhD. The use of a low-frequency algorithm is foreseen, which will be indicated during the tests. It should be noted that the crane is a non-stationary device, variable mass and geometrical configuration during operation. In addition, during repairs or reinstallations, the device is often dismantled and assembled. This causes some changes in its dynamics. Therefore, the monitoring algorithm must be supported by the so-called "Twin structure", that is the appropriate object model. This model will be tuned after each crane reinstallation and will provide reference data for various work states.

Research facilities: The doctorate will be realized as part of cooperation with the Polish Office of Technical Inspection (UDT). The subject of work as well as the method of solution will be consulted on an ongoing basis with the aforementioned partner. UDT will also designate the co-supervisor and will provide the research facility, the necessary technical documentation and will finance the purchase of the necessary test equipment. Part of the work will be carried out in the Department of Robotics and Mechatronics of WIMiR. The Deprtment has software for modeling using the finite element method and for experimental modal analysis as well as the necessary measuring equipment for this type of research.

Number of places: 1

 

7. The impact of bus suspension parameters on the possibilities of optimizing its structure.

Supervisor: prof. dr hab. inż. Tadeusz Uhl

Auxiliary supervisor: dr inż. Dariusz Michalak

Faculty of Mechanical Engineering and Robotics

Abstract: The aim of the research, is the analysis of optimization possibilities and optimization of the bus vehicle architecture (category M3) (reduction of mass, simplification of construction, reduction of energy consumption, etc.) through proper selection of construction and parameters of the chassis (such as; shock absorbers selection with different or variable actively controlled damping force), minimizing the forces and fatigue cycles of the vehicle structure while maintaining the remaining parameters, such as traction or comfort at a similar level. The works will have a practical and cognitive character.

Research facilities:

Number of places: 1

 

8. Procedure of calculating the fatigue life of lightweight city buses taking into account the variability of service loads.

Supervisor: prof. dr hab. inż. Wiesław Jerzy Staszewski

Auxiliary supervisor:

Faculty of Mechanical Engineering and Robotics

Abstract: The aim of the proposed work is to create a methodology for calculating the fatigue life of modern and lightweight city buses, taking into account the variability of loads. The work will be of a practical and cognitive nature. The developed solution will be implemented as a strength calculation procedure in Solaris Bus & Coach S.A.

Research facilities:

Number of places: 1

 

9. Analysis of driving dynamics of electrical crane cabins in term of modernization of shaft reinforcement and improvement of guidance systems.

Supervisor: prof. dr hab. inż. Jerzy Kwaśniewski

Auxiliary supervisor: dr inż. Szymon Molski

Faculty of Mechanical Engineering and Robotics

Abstract: The main purpose of the above research is to develop methods for continuous dynamic measurements of the impact forces of electric elevator lifts on shaft reinforcement elements and parts of linear cabin guiding. Collected data as a result of the above measurements will be used to perform analysis and calculations of the actual loads that the shaft reinforcement elements and linear cabin guidance systems are subjected to. The development of the above-mentioned method and tools for taking measurements as well as the method of analysing the obtained results, will allow in the future to propose new technical solutions for shaft reinforcements and crane cabin systems. The above activities will also allow to verify the construction solutions currently applicable in the crane industry and suggesting others whose application will result in material and energy savings by reducing the mass of assembled components and moving parts in shafts and elevators.

Research facilities: The Department of Machine and Transport Engineering has the equipment to carry out technical tests.

Number of places: 1

 

10. Advanced data analysis method with application to optimization of technological processes in energy technologies.

Supervisor: dr hab. inż. Marian Banaś, prof. AGH

Auxiliary supervisor: dr inż. Tomasz Janda

Faculty of Mechanical Engineering and Robotics

Abstract: The issue concerns the optimization of technological processes related to the combined production of thermal and electrical energy, using advanced data analysis methods (machine learning, deep learning) and thermodynamic modeling. The problem includes short-term planning of production units operation and cooperation with district heating network, using predictive models to determine the heat demand. Data analysis algorithms enable verification of production scenarios as well as predictive maintenance and control of machinery and equipment.

Research facilities: Computer stations with software dedicated to data analysis and visualisation (R, Matlab, OriginLab), thermodynamic modeling (Ebsilon) and CFD modeling (Ansys Fluent, Star-CCM+, Code_Saturne)

Number of places: 1

 

11. Design of hybrid thruster with use of additive manufacturing and performance analysis.

Supervisor: dr hab. inż. Jacek Cieślik

Faculty of Mechanical Engineering and Robotics

Abstract: The research issue concerns the development of hybrid rocket engine technology that could be used in small satellites. The use of additive manufacturing technology to optimize the structure is of particular importance. The main research problems will be the engine design, finding the right 3D printing parameters, analysis of the quality of the prototype and testing the prototype on the test bench to determine performance. Previously used rocket engines for satellites use toxic propellants that achieve relatively low efficiency. With the growing interest in small satellites, there is a demand for compact and efficient motors powered by green propellants. The result of the work will be a technology demonstrator and a set of guidelines allowing the design of this type of engine.

Research facilities: The facilities that will be used in the research include the laboratories of the Department of Manufacturing Systems, equipment collected in KN AGH Space Systems' laboratories and machines manufactured by Progresja SA. The Department of Manufacturing Systems has machine tools and machines for mechanical and electro-discharge machining, water cutting, TIG and MIG/MAG welding, laser welding. We also have a mechanical metrology laboratory - measurements of length and angle, a laboratory for testing the surface layer, 3D printers (7 pieces in total) including FDM and SLS. AGH Space Systems gained access to a rocket engine test bench, which can be used to test the prototype's performance. Progresja has machines for additive production in SLS / SLM technology (Renishaw AM400 and AM250) as well as in LMD (HPFL IPG YLS-3000-CT). This equipment enables the use of a wide range of materials, as well as conducting an in-depth qualitative analysis of the sintered material.

Number of places: 1

 

12. Structures of acoustic systems using new technologies of materials and digital control systems.

Supervisor: dr hab. inż. Tadeusz Kamisiński, prof. AGH

Auxiliary supervisor: dr inż. Artur Flach

Faculty of Mechanical Engineering and Robotics

Abstract: Due to the multifunctionality of acoustic qualities designed and used today, the demand for advanced solutions of acoustic systems with variable parameters increases. It is connected with the need to adjust the acoustic parameters of the interior to the current function of the room. Achieving the required parameters is possible through the appropriate selection of various acoustic systems: multilayer curtain with adjustable surface, reverberation chambers with adjustable factor of opening, diffusers with variable geometry, resonant structures. By changing the parameters of these elements it is possible to achieve the desired room acoustics. Systems with variable geometry provide to control their parameters depending on the needs, influence the overall room acoustics. The use of the control system allows for the automation of this process, thanks to which it is possible to adjust the interior acoustics to different conditions. The research task undertaken will enable the development and implementation of such systems that will allow to combine properties of acoustic systems with variable parameters with an active digital parameter control system.

Research facilities: reverberation chamber with a system for measuring acoustic absorption, reverberation chamber with a system for measuring acoustic scattering, anechoic chamber with a system for measuring acoustic scattering

Number of places: 1

 

13. Prediction and modeling of shock absorber's valve noise inside car interior based on bench tests.

Supervisor: dr hab. inż. Maciej Kłaczyński

Faculty of Mechanical Engineering and Robotics

Abstract: Car manufacturers (OEMs) make effort on lowering the noise levels of every component to minimum. This is causing drastic increasing of demands against OEM suppliers.Shock absorber and other chassis elements are fundamental noise source, because of fact that rest of car components (engine, gearbox, exhaust) are already well rounded in terms of vibroacostic performance. Noise of chassis components without masking (by engine for example) is clearly audible. Another downside is fact that shock absorber must be chosen/tuned for particular chassis on very early stage of car development, what causes lots of issues with vibroacoustic optimization. Therefore development of tool/method for quick obtaining of car interior vibroacoustic characteristics and using them for vibroacoustic optimization of shock absorber is crucial. Data collected from car interior should be used for develepment of method to replay shock absorber as it is in the car, based on bench tests (subjective assesement). Yet another purpose of this method would be target setting for shock absorber (pressures, forces, accelerations of piston rod), which in particular car interior will fulfill noise requirements. Currently, all shock absorbers are struggling with customer returns, over 50% of which are noise. Other returns result mainly from oil contamination. In addition to complaints, resignation from additional car tuning sessions to determine whether the given valve code is loud or does not contribute to the reduction of implementation costs.

Research facilities: BWI Group has full technical capability to assembly any desired prototype of shock absorber in any configuration in terms of mechanical and hydraulic parts. There is also full scale laboratory with mechanical benches for performance and cleanliness test as well as hydraulics for durability, vibration, forces and noise. There is also a car pool different brands/models for testing and improvement purposes. The equipment of the Department of Mechanics and Vibroacoustics of AGH in Krakow includes instruments, such as analyzers, microphones, accelerometers, vibrometers, intensity probe and Siemens Simcenter software (formerly LMS) enabling measurements of vibroacoustic characteristics including binaural records both in laboratory and in situ (on benches and cars) including binaural headsets.

Number of places: 1

 

14. Development of operational control methods for shaft reinforcement made of composites.

Supervisor: prof. dr hab. inż. Jerzy Kwaśniewski

Auxiliary supervisor: dr inż. Szymon Molski

Faculty of Mechanical Engineering and Robotics

Abstract: The use of composite materials as a material for shaft reinforcement elements can bring many technical and economic benefits. However, these materials have not been commonly used in this field of mining unit now. For this reason, there are no means and methods of controlling elements from these materials in case of their application to shaft reinforcement elements. The main goal of the research project is the development of such a method. As an example of a selected application of composite materials for reinforcement elements in the shaft or fore-shaft, tests will be carried out describing the behavior of these materials in the mine over the period of implementation of this research topic. Tests will be taking place on samples of materials located in real conditions in mining excavations. Conducted observations and tests of technical parameters of materials will allow to develop methods for determining the condition of suitability of composite elements as a function of their exploitation time. This will allow to increase popilarity of these materials in mining and substitute traditional materials such as steel and wood used for shaft reinforcement elements. Composite materials have many advantages over traditional materials. First of all, they are resistant to corrosion, they do not require anticorrosion protection, they are light and as durable as steel. Widespread replacement of traditional materials will reduce the costs of mining operations and as a consequence increase the profitability of companies in the mining industry. Composite materials, thanks to the effects obtained during the implementation of the proposed research problem, will be able to become more widely used in mining, as it happened in others branches of industry.

Research facilities: The Department of Machine and Transport Engineering has the equipment to carry out technical tests.

Number of places: 1

 

15. The analysis of properties of structural biopolymers in durability aspect.

Supervisor: dr hab. inż. Andrzej Młyniec

Faculty of Mechanical Engineering and Robotics

Abstract: The group of polymeric materials from renewable resources is successively increasing its share in products from different industries. Except the independence from accessibility of non-renewable resources, major benefit of above-mentioned materials is biodegradation. Substitution of plastics currently used in the automotive industry by biopolymers is still limited due to stringent requirements that components must fulfil, especially with regards to their mechanical strength in short-term and long-term perspective. Proposed topic of doctoral thesis includes development of numerical analysis methodology allowing prediction of component’s behavior right after manufacturing (with regards to validation phase) as well as during life-cycle, which extends to more than 10 years. Relevant aspect of the research is the investigation of time-dependent processes and their influence on the mechanical properties of analyzed materials. The ability to judge precisely static strength, fatigue properties of a component and biomaterial is a milestone in allowing introduction of such technical solution to products used in the automotive industry. Preparation of CAE methodology for strength & durability prediction of biopolymer components is of great practical importance and it is going to be incorporated into MERIT’s design process. Improvement achieved through this measure increases significantly company’s competitiveness due to reduction of expensive design modifications in the late phase of the project. While there are no legal acts dictating the use of biopolymers, especially in the automotive industry, the observation of current trends leads to a conclusion that it might become an obligation in next decades. The solution to this research problem will increase the competitiveness of the company, which can eventually allow the development of local companies dealing with structural biopolymers.

Research facilities: Company’s research and development center besides CAD, CAE capabilities has a broad experience and technical measures to perform prototyping, verification and specific measurements of the parts and materials. The available equipment is listed below: 14 Climatic Chambers, 3 thermal shock chambers, X-Ray Tomography, Semi-anechoic chamber, Vibration system, Dust chamber, Water chamber, Durability test benches with continuous monitoring.

Material laboratory provides possibilities to use: Scanning Electron Microscope SEM, Microscope FT-IR Spectrometer TGA – Thermogravimeter TG2 (METTLER TOLEDO), DSC - Differential scanning calorimetry (METTLER TOLEDO), Melt Flow Tester CEAST MF20 (INSTRON), Pre-prototyping is possible thanks to availability of Lathe, Milling machine and 3D printer.

AGH – University of Science and technology in Cracow has an extensive laboratory capability in polymeric materials testing. In this particular project the most useful seems to be dynamic strength machines equipped with thermal chamber which will be used for development of visco-elastic material models taking into account material degradation.

Number of places: 1

 

16. Development and integration of a cleaning system for a pulverized coal-fired boiler inspection robot.

Supervisor: dr hab. inż. Tomasz Buratowski, prof. AGH

Auxiliary supervisor: dr inż. Aneta Pólkowska-Wicher

Faculty of Mechanical Engineering and Robotics

Abstract: The research problem involves development, integration damage detection system for a mobile robot. The robot shall perform inspection of pulverized coal-fired boilers. The required mobility of the robot demands an advanced damage detection, control system to combine the ability to scale vertical ferromagnetic boiler walls, maximize the magnetic attraction force, implement the regulation of the magnetic attraction force, enable the control of the cleaning module and implement a localization algorithm of the robot in the boiler structure.

Research facilities: Mobile robots laboratory.

Number of places: 1

 

17. Development of a compact portable laser-based ultrasonic scanner for operational inspections

Supervisor: prof. dr hab. inż. Tadeusz Stepinski

Faculty of Mechanical Engineering and Robotics, laboratories of AGH UST Centre of Energy

Abstract: Recent developments in laser technology lead to small-footprint, high repetition rate pulse lasers that can be used to generate ultrasound. Using high sensitive balanced interferometers ultrasonic waves can be sensed and damage detection can be performed in the all-optical way. The aim if this work is to develop a compact manual laser ultrasonic scanner that can be used for in-situ inspections. To achieve the goal a probing head combining transmit and receive laser beams will be designed. Fiber optics light delivery will be used to couple light from the laser head to the sample.

Research facilities: The problem of laser ultrasound is under development within a research project LIDER/15/0085/L-8/16/NCBR/2017. Within the project a laboratory testing bench is developed. The initial results obtained within the project suggest that the system could be optimized for a portable scanner that could be used for in-situ inspections. The proposed work will be carried out with participation of Urząd Dozoru Technicznego, a local agency for safe machines exploitation.

Number of places: 1

 

18. Eddy current pulsed thermography for detection of local steel degradation

Supervisor: prof. dr hab. inż. Tadeusz Stepinski

Faculty of Mechanical Engineering and Robotics, laboratories of AGH UST Centre of Energy

Abstract: Local material degradation can be detected using the sensing techniques based on the electromagnetic NDE, e.g. eddy current, magnetic flux leakage (MFL). Eddy current pulsed thermography (ECPT) is an emerging multiple-modality NDE technique for conductive materials, which combines both advantages of pulsed eddy current (PEC) and infrared thermography. Inspected material is locally heated using specially designed coil that generates high intensity eddy currents under the inspected surface. A sensitive infrared camera can detect the presence of microcracks since they produce local temperature variations. The ECPT is a highly sensitivity and contact less method that does not require mechanical scanning of the inspected surface.

Research facilities: Methods for nondestructive evaluation (NDE) of materials have been developed at our group for several years; currently an autonomous robot for the inspection of fluid bed ovens has been designed in collaboration with TAURON. This project will result in a test setup for detecting microcracks resulting in fatigue process. Eddy current pulsed thermography as a novel modality that hybrids multiple physical phenomena, i.e. electromagnetic methods and thermography, creates new possibilities for creating fatigue detection methods. The proposed work will be carried out with participation of Urząd Dozoru Technicznego, a local agency for safe machines exploitation.

Number of places: 1

 

19. Analysis and evaluation of machine learning techniques for creation of new digital audio signal data compression algorithms

Supervisor: dr hab. inż. Bartłomiej Borkowski

Department of Mechanics and Vibroacoustics, Faculty of Mechanical Engineering and Robotics

Abstract: The research problem concerns conducting research about the possibilities of creating new data compression algorhithms of lossy or lossless audio signals through analysis of current solutions in the field od digital signal processing as well as evaluation of machine learning techinques in this context.

The main responsibility and quality indicator will be to propose a new solution possible to use in the process od audio compressio to imporve it’s parameters, such as transparency, compression ratio or compute complexity through the use of machine learning techniques. Currently used methods of audio compression use paramateres of audio signal processing and psychoacoustic models set by hand and don’t use models created in the process of traing neural networks. An attempt to create a solution which has improved qualities through the use of such networks will be undertaken in this research. This solution will expand the possibilties of currently used precesses of audio signal transmission.

Doctoral students assignment will be to determine the possibilities to implement new processes of signal processing in currently used audio compression systems by the use of, among others, machine learning techniques and propose new audio compression system which has expanded possibillities through the use of these techinques.

Research facilities: The research facilities available for the implementation of the scientific project are the extensive equipment of the Department of Mechanics and Vibroacoustic at the AGH University of Science and Technology, in particular listening and computer rooms, which are predisposed to carry out work on the proposed subject.

The Department of Mechanics and Vibroacoustics at the AGH University of Science and Technology has laboratories equipped with devices used for audio signal analysis and rooms used for listening of such signals. Moreover it has computer rooms equipped with computers on which it is fully possible to research and develop the scientific project, as well as compute servers allowing for fast computation of numerical problems required by the research. Listening tests of signals developed in the research is possible in the listening rooms.

Number of places: 1

 

20. Development and integration of a control system for a pulverized coal-fired boiler inspection robot

Supervisor: dr hab. inż. Tomasz Buratowski, prof. AGH

Department of Robotics and Mechatronics, Faculty of Mechanical Engineering and Robotics

Abstract: The research problem involves development, integration with electromechanical structure and implementation of a control system for a mobile robot. The robot shall perform inspection of pulverized coal-fired boilers. The required mobility of the robot demands an advanced control system to combine the ability to scale vertical ferromagnetic boiler walls, maximize the magnetic attraction force, implement the regulation of the magnetic attraction force, enable the control of the cleaning module and implement a localization algorithm of the robot in the boiler structure.

Research facilities: LAM laboratory, mobile robots laboratory, drives and control laboratory.

Number of places: 1

 

21. Evaluation of material degradation at the micro-structural level using the nonlinear ultrasonic waves

Supervisor: prof. dr hab. inż. Wiesław Jerzy Staszewski

Second supervisor: prof. dr hab. inż. Łukasz Madej

Faculty of Mechanical Engineering and Robotics, laboratories of AGH UST Centre of Energy

Abstract: Coal power stations account for nearly 70% of the power produced in Poland. Unfortunately, more than three-quarters of coal power stations units have long exceeded the planned operation time. Frequent failures and unplanned downtimes pose a serious challenge to operators and policy makers in the country. One of the basic problems is early detection of potential damage of power units.

Often, material degradation or microcracks generated during operation are impossible to detect using classical inspection methods. However, the latest scientific studies show a significant influence of the local material microstructure (e.g. distribution of material phases, load and thermal fatigue, structural defects, plasticity) on non-linear propagation of elastic waves in the ultrasonic range. The subject of the proposed research is the propagation of Lamb waves in the higher harmonics range and the analysis of ultrasound wave modulation by low frequency strain waves (in the modal range). The purpose of these studies is to analyze the impact of local material microstructure (e.g. stress concentration, plasticity of the material, thermal fatigue) on non-linear propagation of ultrasonic waves. Interdisciplinary research will be conducted in cooperation with material engineering specialists. This analysis will contribute to the development of new methods for assessing the degradation of material in the field of non-destructive testing.

Research facilities: Research work will be carried out in cooperation with the Office of Technical Inspection in the available laboratories of non-destructive testing. In addition, UDT provides additional funding for research conducted as part of the project.

Number of places: 1

 

22. Automation of a Small Punch Test method for assessing of materials degradation

Supervisor: prof. dr hab. inż. Tadeusz Uhl

Faculty of Mechanical Engineering and Robotics, laboratories of AGH UST Centre of Energy

Abstract: Small Punch Test is a method for material testing based on small samples taken from working installations using Surface Scoop Sampling unit. The samples have a shape of disc with diameter of 21 mm. This samples using special standardized punch system can be tested on creeping and fracture. The method is commonly applied for testing of installations in nuclear power plants. Introduction of the method in installations operating in polish energy sector required validation for materials which are in use. The goal of proposed research is automation of Small Punch Test for materials typically applied in Polish Power Plants. The results will be compared with classical methods used for assessing of materials degradation due to thermal low cycle loads. Automation of assessment of material properties will be done using machine learning approach. To train ANN a data base with high number of samples tested with various methods will be formulated. Depp Learning type of neural network will be applied for assessment of level of degradation of tested materials. The photos of the samples after small punch test will be a basic information of training of DLNN. The thesis is on intersection between material science, mechanical engineering and artificial Intelligence. The experimental parts of the thesis will be conducted in cooperation with Urzędem Dozoru Technicznego (UDT).

Research facilities: The project will be realize in cooperation btween AGH and UDT. The reserach part will be supported by UDT, without scholarship. The scholarschip isw offered by the University. Nowadays in Center of Energy AGH Laboratory for materials testing is under developmnet, in cooperation with UDT. The laboratory goal is to test materials in Polish energy sector for degradation due to cyclic thermal loadings. Experimental rig will contain SPUTTTM unit for microsample collection and unit ESTIMTM for testing. The system is computerized and acces to control software is open, then it is possible to develope implemented test algorithms. Center of Energy is equiped with RGB camera and hiperspectral kamera for test results aquisition.

The laboratory will be ready to make tests till and of this year.

 

Number of places: 1

 

23. Development of an innovative technology of milling of difficult-to-cut construction materials using the HSM method

Supervisors: dr hab. inż. Jacek Cieślik, prof. AGH

Auxiliary supervisor: dr inż. Krzysztof Zagórski

Faculty of Mechanical Engineering and Robotics

Abstract: The research problem includes the development of machining technology using the high-speed milling method (HSM), including:

  • study of the impact of technological parameters on the surface quality and the geometric accuracy of the product,

  • determination of the effect of concurrent and counter-rotary milling,

  • determining the properties of the HSM milling process,

  • assessment of tool and machine durability,

  • study of the impact of tool construction on the selection of milling parameters and the surface of the element,

  • developing a machining strategy for milling hard-to-cut materials,

  • determination of the impact of preparing the semi-finished product on the quality of the final product.

In addition, the student has the opportunity to learn the basic principles of correct homing of the semi-finished product and validation of the accuracy of the product - through the use of modern, advanced metrological tools.

The result of the work will be the creation of a technology demonstrator and a set of guidelines allowing for the design of high-speed machining processes.

Research facilities: The facilities that will be used in the research include laboratories of the Department of Manufacturing Systems and laboratories of the Department of Machine Design and Operation and the Department of Strength, Fatigue of Materials and Structures.

Department of Manufacturing Systems has at its disposal machine tools and machines for machining, electrical discharge machining (EDM, spark erosion), water cutting, TIG and MIG / MAG welding, laser welding. HSM technology research will be performed using an advanced CNC machining center. It has at its disposal a laboratory of mechanical metrology - length and angle measurements, laboratory for testing the surface layer, including roughness and shape of surface treatment, microhardness measurement, 3D printers (including 7 pieces) including FDM and SLS.

Number of places: 1

 

24. Development of an innovative technology for processing difficult-to-machine construction materials using a high-speed turning process

Supervisors: dr hab. inż. Jacek Cieślik, prof. AGH

Auxiliary supervisor: dr inż. Krzysztof Zagórski

Faculty of Mechanical Engineering and Robotics

Abstract: The research issue includes the development of machining technology using the method of high-speed turning (machining process), including:

  • study of the impact of technological parameters in the process of turning on surface quality and geometric accuracy of the product,

  • determining the properties of the rolling process at high speeds,

  • tests to increase the durability of tools,

  • study of the impact of tool construction on the selection of turning parameters and the surface of the element,

  • developing a machining strategy for turning difficult-to-cut materials,

  • determination of the impact of preparation of the semi-finished product on the quality of the final product.

In addition, the student has the opportunity to learn the basic principles of correct homing of the semi-finished product and validation of the accuracy of the product - through the use of modern, advanced metrological tools.

The result of the work will be the creation of a technology demonstrator and a set of guidelines allowing for the design of high-speed machining processes.

Research facilities: The facilities that will be used in the research include laboratories of the Department of Manufacturing Systems and laboratories of the Department of Machine Design and Operation and the Department of Strength, Fatigue of Materials and Structures.

Department of Manufacturing Systems has at its disposal machine tools and machines for machining, electrical discharge machining (EDM, spark erosion), water cutting, TIG and MIG / MAG welding, laser welding. HSM technology research will be performed using an advanced CNC machining center. It has at its disposal a laboratory of mechanical metrology - length and angle measurements, laboratory for testing the surface layer, including roughness and shape of surface treatment, microhardness measurement, 3D printers (including 7 pieces) including FDM and SLS.

Number of places: 1

 

25. Development of an innovative technology for manufacturing of mechanical elements with metamaterial properties by 3D printing methods

Supervisors: dr hab. inż. Jacek Cieślik, prof. AGH

Auxiliary supervisor: dr inż. Piotr Dudek

Faculty of Mechanical Engineering and Robotics

Abstract: The research issue includes the development of possibility to produce new structures with the metamaterials properties by 3D printing methods, including:

  • study of the possibilities of producing complicated geometrical structures, their topological optimization, the properties of metamaterials, including, for example, Poisson's negative coefficient or controlled deformation under the external force,

  • modeling of structures using numerical methods, MES,

  • modeling and testing structures that absorb impact energy.

In addition, the student has the opportunity to learn the tools of geometric modeling, tools for strength analysis and FEM methods, incremental generation technology and modern metrological tools.

The effect of the work will be methodologies and tools for generating geometrical structures that offer specific mechanical properties with metamaterial features.

Research facilities: The facilities that will be used in the research include laboratories of the Department of Manufacturing Systems and laboratories of the Department of Machine Design and Operation and the Department of Strength, Fatigue of Materials and Structures. KSW has an appropriate machine park, including 3D printers (SLS, FDM, 3DP and SLA methods). The Department has in its equipment metrological tools as well as 3D scanners to measure geometric dimensions.

Number of places: 1

 

26. Evaluation of surface features after 3D FDM printing basing on profile and topographic methods

Supervisors: dr hab. inż. Jacek Cieślik, prof. AGH

Auxiliary supervisor: dr inż. Damian Dzienniak

Faculty of Mechanical Engineering and Robotics

Abstract: The research problem concerns the development of a method for assessing surface features of polymeric materials with an admixture of carbon fibers, of the Nanocarbon type, after 3D printing using the FDM method. Due to the specific texture and degree of isotropy, an appropriate selection of parameters characterizing the surface roughness is important.

The implementation of the research problem is multi-stage and includes:

  • performance of a technological experiment consisting in printing samples from the tested composite for the parameters describing the shaping process specified in the work plan;

  • selection of parameters used to describe roughness and stereometric features;

  • measurements on three instruments for surface roughness and topography measurements (TOPO IZTW, Formtracer SVC 4500 H4 Mitutoyo, MarSurf PS Mahr) and determination of parameter values;

  • comparative analysis of parameters by radar visualization and determination of the degree of correlation;

  • development of the method of multi-aspect surface evaluation based on the optimal set of parameters.

The end result of the work is to be an indication of such a set of parameters representing surface features that has technological significance.

Research facilities: The facilities that will be used in the research include laboratories of the Department of Manufacturing Systems and laboratories of the Department of Machine Design and Operation and the Department of Strength, Fatigue of Materials and Structures. KSW has an appropriate machine park, including 3D printers (SLS, FDM, 3DP and SLA methods). The Department has in its equipment metrological tools as well as 3D scanners to measure geometric dimensions.

Number of places: 1

 

27. The effect of acoustical conditions on emotional and mental development of children

Supervisor: prof. dr hab. inż. Piotr Kleczkowski

Department of Mechanics and Vibroacoustics, Faculty of Mechanical Engineering and Robotics

Abstract: The effect of acoustic environment on the development of children has been confirmed. Children exposed to noise showed slower development of vocabulary. The research will be focused on not yet explored aspects of this problem, especially on finding which elements of the acoustical environment could have a positive effect on child’s development. The research will consist in epidemiologic analysis of data on specific parameters of an individuals’ acoustic environment, that will be compared against the child’s performance in tests and descriptive characteristics.

Research facilities: The Department of Mechanics and Vibroacoustics has all necessary equipment to measure noise.

Number of places: 1

 

28. Improvement of sound systems’ properties through application of advanced signal processing algorithms

Supervisor: prof. dr hab. inż. Piotr Kleczkowski

Auxiliary supervisor: dr Marek Pluta

Department of Mechanics and Vibroacoustics, Faculty of Mechanical Engineering and Robotics

Abstract: In traditional approach, the performance of sound systems depends mainly on the characteristics and parameters of their physical elements. With time, elements responsible for signal processing became an additional factor shaping these properties. Their capabilities, initially small, grow at a very fast pace. Increase in computing power with decreasing energy demand and progressing miniaturization of computing units allows to integrate advanced signal processing algorithms into sound systems, with a knowledge in the field of construction and operation of transducers themselves, as well as knowledge in the field of psychoacoustics or, more broadly, human perception of sound. Thus, it is possible to improve the performance of sound systems in a wide range of applications, including control of transducer behavior [1,2] or shaping of acoustic field [3]. The research will focus on identifying areas where the use of digital signal processing will bring significant improvements to the system's properties and on the proposition and implementation of appropriate algorithms.

References

[1] Rumsey F, DSP in Loudspeakers, J. Audio Eng. Soc, [Internet] 56 (3)1/2, 2008, 65–72,. Available from: www.aes.org/e-lib/browse.cfm

[2] Sinev D, Low-Complexity Non-Linear Loudspeaker Protection, In: Audio Engineering Society Convention 145. 2018. Available from: www.aes.org/e-lib/browse.cfm

[3] Furstoss M., Thenail D., Galland M.A., Surface Impedance Control for Sound Absorption: Direct and Hybrid Passive/Active Strategies, J. Sound Vib., 203 (3)2, 1997, pp. 219–236

Research facilities: The Department of Mechanics and Vibroacoustics has all necessary facilities to perform this research.

Number of places: 1

 

29. The analysis of factors in recording and production of music determining subjective perception of the loudness of music material

Supervisor: prof. dr hab. inż. Piotr Kleczkowski

Department of Mechanics and Vibroacoustics, Faculty of Mechanical Engineering and Robotics

Abstract: Subjective loudness has been a preferred property of recordings for a long time. It was usually achieved by dynamic compression of sounds, which has several drawbacks. This research is focused on finding the effects of other operations used in the production of music material on its loudness, from the placement of microphones, through tape recording distortion, equalization, to dynamic compression and non-linear distortion.

Research facilities: The Department of Mechanics and Vibroacoustics has all necessary facilities to perform this research.

Number of places: 1

 

30. Principles of the innovative high fidelity sound reproduction over flat panel loudspeakers

Supervisor: prof. dr hab. inż. Piotr Kleczkowski

Department of Mechanics and Vibroacoustics, Faculty of Mechanical Engineering and Robotics

Abstract: Flat panel loudspeakers have unique properties, including very wide radiation angle and short impulse response. Their drawback is poor frequency characteristics. The latter can be successfully compensated with appropriate digital correction filters. After correction, the spatial attributes of reproduction over flat panel loudspeakers far outperforms that of the best studio monitors based on dynamic loudspeakers. In the first stage of research the method of measurement of their complex spatial radiation characteristics will be developed. In the second stage, the appropriate digital correction filters will be developed. In the last stage, subjective listening tests will be performed to compare the performance of corrected flat panel loudspeakers with loudspeaker systems made of dynamic loudspeakers.

Research facilities: The Department of Mechanics and Vibroacoustics has all necessary facilities to perform this research.

Number of places: 1

 

31. Listening tests comparing high fidelity spatial audio reproduction systems with the use of flat panel loudspeakers

Supervisor: prof. dr hab. inż. Piotr Kleczkowski

Department of Mechanics and Vibroacoustics, Faculty of Mechanical Engineering and Robotics

Abstract: Flat panel loudspeakers have unique properties, including very wide radiation angle and short impulse response. Their drawback is poor frequency characteristics. The latter can be successfully compensated with appropriate digital correction filters. After correction, the spatial attributes of reproduction over flat panel loudspeakers far outperforms that of the best studio monitors based on dynamic loudspeakers. The research will consist in a wide comparison of subjective listening experiences between reproductions over corrected flat panel loudspeakers and dynamic loudspeaker based systems. Spatial reproduction in its two basic formats will be performed: surround 5.1 i Auro 9.1., in various configurations and acoustic properties of rooms.

Research facilities: The Department of Mechanics and Vibroacoustics has all necessary facilities to perform this research.

Number of places: 1

 

32. The investigation of the effect of basic physical properties of sound on the perception of space in musical recordings

Supervisor: prof. dr hab. inż. Piotr Kleczkowski

Department of Mechanics and Vibroacoustics, Faculty of Mechanical Engineering and Robotics

Abstract: Artificial creation of space is a key element of contemporary music production technology. However, theoretical principles of human perception of space in recordings have not been investigated in adequate extent. The basic question is the following: What is the relation between physical parameters of sound and a subjective perception of space? The research will consist in numerous experiments in perception, both with headphones and loudspeakers. The key research tool will be the creation of appropriate signals, both recorded with a spatial high-order Ambisonics microphone and those processed with signal processing techniques.

Research facilities: The Department of Mechanics and Vibroacoustics has all necessary facilities to perform this research.

Number of places: 1

 

33. Identification of wave phenomena in bounded elastic media

Supervisor: dr hab. inż. Andrzej Klepka prof. AGH

Department of Robotics and Mechatronics, Faculty of Mechanical Engineering and Robotics

Abstract: The main part of the proposed doctoral thesis is work on the propagation of waves in geometrically bounded elastic media. The assumption is that the elastic media is a liquid, enclosed in a tank (tube) made of metallic or plastic materials. The effect of the work will be to develop a method that allows identification and characterization of the effects of propagation field disturbances caused, for example, by the discontinuity of the bounded materials.

Research facilities: Department of Robotics and Mechatronics has research facilities to conduct work in the field of thesis subject. Measurement equipment is available (laser vibrometers with software, pressure measuring sensors, excitation devices, signal acquisition systems, amplifiers, piezoelectric transducers). There are available test stands: laboratory, located in the Department of Robotics and Mechatronics as well as real system at the Municipal Water and Sewage Company. There is a possibility of additional financing of research works in the framework of cooperation with an industrial partner

Number of places: 1

 

34. Identification and characterization of local resonances in inhomogeneous media

Supervisor: dr hab. inż. Andrzej Klepka prof. AGH

Department of Robotics and Mechatronics, Faculty of Mechanical Engineering and Robotics

Abstract: The main goal of the proposed research project is to understand the physical mechanisms behind the phenomenon of local resonances occurring in inhomogeneous media with discontinuities. The motivation for the proposed research stems from the recent observations published in the literature, where the existence and some properties of local resonances were reported. Theoretical work, numerical simulations and accompanying experimental testing will be performed in order to collect new knowledge about the occurrence and physical nature of local resonances. In particular, the relationships between the local resonances and the factors such as the morphology and location of discontinuities, contact behavior of the asperities and thermal field distribution will be studied. Additionally, the methods for modeling of inhomogeneous structures with local resonances will be elaborated with the goal to develop a technique to identify local resonances in real structures. The research hypothesis, which will be verified, assumes that it is possible to selectively excite local resonances in inhomogeneous media with discontinuities and utilize them to effectively enhance the nonlinear response of these media.

Research facilities: Department of Robotics and Mechatronics has research facilities to conduct work in the field of thesis subject. Measurement equipment is available (laser vibrometers with software, measuring sensors, signal acquisition systems, amplifiers, piezoelectric transducers). The PhD student will carry out research work as part of the OPUS15 project, receiving an additional monthly reward around 3000/PLN(net amount) for a period of two years.

Number of places: 2

 

35. Application of vision methods for the diagnosis of anatomical structures of the knee joint based on MRI images

Supervisor: dr hab. inż. Piotr Kohut

Department of Robotics and Mechatronics, Faculty of Mechanical Engineering and Robotics

Abstract: The research topics concern the development of new algorithms and methods of image processing and interpretation for automatic detection, segmentation and assessment of the most important anatomical structures of the knee joint.

The scientific goal involves the development of new algorithms for assessment of the changes that are observed on MRI in case of damage of the most important structures of the knee: meniscus and anterior cruciate ligament. The analysis will be based on a verified set of radiological images. On this basis, it will be possible to develop and assess the accuracy and effectiveness of new algorithms for image analysis, which will enhance significantly the existing knowledge of the subject. Automatic evaluation of states of complex structures of the knee joint on the basis of medical images and the ability to verify the results by radiology specialists will help to objectively assess the proposed image processing methods.

Research facilities: The opportunity to implement the research topic as part of the research proposal OPUS 17 ( project submitted on June 2019 to National Science Centre and it is currently under evaluation)

Number of places: 1

 

36. Development of new methods of assessment and minimization measurement uncertainty for vision-based measuring systems

Supervisor: dr hab. inż. Piotr Kohut

Auxiliary supervisor: dr inż. Krzysztof Holak

Department of Robotics and Mechatronics, Faculty of Mechanical Engineering and Robotics

Abstract: The research objective is to define a comprehensive methodology for assessment and minimization of uncertainty of (passive and active) vision-based measurements.

The research will cover, among others, following tasks: identification of factors which affect the value of the measurement uncertainty for contactless methods, mathematical description of identified influences, determination of the measurement uncertainty and its minimization on the basis of the information gathered in earlier tasks. Identification of factors that affect the uncertainty of the contactless measurement will be made by executing a series of experiments that will involve the measurement of material standards representing the basic shapes and geometrical relationships between them as well as measurements of elements that can be met in everyday practice during measurements performed on considered measuring systems. These experiments will be performed on test stands, which will allow to change the measurement conditions (such as the lighting, temperature, mechanical vibrations) and to observe the impact of these changes on the uncertainty of measurements. Analysis of obtained results (carried out using innovative statistical and numerical methods) will allow to determine quantitatively the impact of various factors on the value of the measurement uncertainty. In later stages of the project this will contribute to development of a mathematical model of contactless measurement uncertainty and to development of methods of uncertainty assessment and minimization. Methods developed within the project will then be verified through comparison of the results obtained by measurements performed in accordance with guidelines prepared for those methods with the results of measurements carried out on high precision Coordinate Measuring Machine and laser systems such as the LaserTracker.

Research facilities: The opportunity to implement the research topic as part of the research proposal OPUS 18 (The research project will be submitted on December 2019, under the research proposal OPUS 18 )

Department Robotics and Mechatronics provides hardware-software facilities for the implementation of research issues (including high-speed digital cameras, professional digital cameras, 3D scanner, software for motion analysis in 2D/3D ).

Number of places: 1

 

37. Modeling of selected elements of power hydraulics in mining machines in the aspect of reliability and safety

Supervisor: dr hab. inż. Krzysztof Kotwica

Auxiliary supervisor: dr inż. Grzegorz Stopka

Department of Machinery Engineering and Transport, Faculty of Mechanical Engineering and Robotics

Abstract: As part of the research problem related to modeling of selected elements of power hydraulics in mining machines in the aspect of reliability and safety, based on the analysis of existing solutions, concepts and virtual models of selected hydraulic components in mining machines will be developed. These models will be tested using advanced computer programs and compared with existing solutions in the field of their use, mainly in mechanized longwall supports working in dump beds, to ensure reliability and safety of their work. Selected new solutions will be made and verified on specialist research stands. As part of planned research projects, it will also be possible to check the effectiveness of the developed solutions in industrial conditions.

Research facilities: The Department of Machinery Engineering and Transport is in possession of specialized computer programs (ANSYS LSDYNA, MES, DEM, INVENTOR) that allow modeling and simulation tests of newly developed solutions of power hydraulics components of mining machines. These solutions can be verified at specialist laboratory stands owned by the Department - a stand for examination of valve blocks of hydraulic actuators. The topics of the research problem will be feasible as part of the scientific project for the analysis of work safety, prepared for implementation in the years 2020-2024 and concerned with the analisis and development of innovative units protecting hydraulic cylinders in mechanized supports.

Number of places: 1

 

38. Simulation tests of new generation mining tool sets in terms of their load and durability

Supervisor: dr hab. inż. Krzysztof Kotwica

Auxiliary supervisor: dr inż. Łukasz Bołoz

Department of Machinery Engineering and Transport, Faculty of Mechanical Engineering and Robotics

Abstract: As part of the research problem related with simulation tests of new generation mining tools sets in terms of their load and durability, based on the analysis of existing solutions, concepts and virtual models of new solutions for mining tool sets will be developed. These models will be tested using advanced computer programs and compared with existing solutions in the field of their use, mainly in terms of their durability, loads and limitations of generated hazards such as sparks and dustiness. Selected new solutions will be made and verified on specialist research stands. As part of planned research projects, it will also be possible to check the effectiveness of the solutions developed in industrial conditions.

Research facilities: The Department of Machinery Engineering and Transport is in possession of specialized computer programs that allow modeling and simulation tests of newly developed solutions of new generation mining tools sets. These solutions can be verified at specialist laboratory stands owned by the Department - a stand for testing of individual mining tools and a field stand for testing of selected mining head components. The topics of the research problem will be feasible as part of the scientific project for the analysis of work safety, prepared for implementation in the years 2020-2024 and concerned with the development of a new generation of mining tools for effective mining of compact rocks.

Number of places: 1

 

39. Laboratory tests of the coefficient of friction and the wear rate of the friction pair: roller - conveyor belt.

Supervisor: dr hab. inż. Piotr Kulinowski

Department of Machinery Engineering and Transport, Faculty of Mechanical Engineering and Robotics

Abstract: During oparation belt conveyors, there is often a problem of mistracing the belt off the conveyor. This phenomenon caused wear of the conveyor components: belt, rollers and even the supporting structure, which significantly contributes to the increase in operating costs. This problem can be caused by many reasons, such as: uncentrical loading of transported material, strong wind, sunshine or dampness, wrong positioning of the conveyor's supporting structure, etc. The first action in eliminating belt run mistracing is to eliminate the causes of this phenomenon. In the case of difficulties with recognition the reasons for the occurrence of this problem, constructional solutions are used, such as: skewing of idlers or use of cone-shaped rollers. The mentioned solutions cause slip of the belt on the surface of the roller coat. Therefore, it is necessary to know the frictional conditions of the rubber-steel pair or rubber-plastic pair, depending on the value of the slip speed. It has been hypothesized that for a given friction pair there is a slip velocity value at which the wear intensity index assumes acceptable minimum values, and the coefficient of friction reaches the maximum value, beneficial for achieving the desired centering effect. The solution of the research problem will be adaptation of the test stand and carrying out a series of tests of selected friction pairs and determination of friction coefficient value and wear intensity index as a function of belt slip speed.

Research facilities: The Department of Machine Engineering and Transport has a prototype of a laboratory stand for the tests of the coefficient of friction and the wear rate of the friction pair of the belt - roller and the remaining research infrastructure required to carry out the planned tests. The topics of the research topic will be also possible to be implemented as part of research projects planned in cooperation with research and development centers of manufacturers of conveyor belts and rollers.

Number of places: 1

 

40. Experimental and theoretical analysis of fatigue properties of mechanical joints used in aircraft structures

Supervisor: dr hab. inż. Tomasz Machniewicz

Faculty of Mechanical Engineering and Robotics

Abstract: The PhD thesis will concern mechanical connections used in aircraft structures, i.e. 2024-T3 aluminium alloy riveted lap joints or friction stir welded (FSW) butt joints. The final choice of connection's kind will depend on the NCN's decision regarding the financing of the submitted research project. The main goals of the experiments conducted as part of the thesis will be: (i) determination of fatigue properties of the tested joints (fatigue life and fatigue crack growth rate) as a function of the considered variables (various loading, structural and technological parameters), (ii) determination of local strain generated in the joints during loading. Simultaneously the theoretical stress and strain FEM analyses will be conducted in order to determine the stress and strain states in the joints. Finally, based on theoretical analysis and the experimental test results, the fatigue life prediction concept of considered joints will be developed.

Research facilities: Equipment units and devices

Experimental research: Servohydraulic fatigue machines: MTS 810 (100 kN) and Dartec 250 (250 kN); digital image correlation (DIC) system for strain measurements; set-up for load controlled riveting; longitudinal and transverse contact extensometers; multichannel strain gauge amplifier; optical microscope for fractographic observations; travelling microscope for crack growth measurements.

FE modelling: ANSYS Mechanical 19 software.

Number of places: 1

 

41. The influence of shape of compression helical spring end-coils on its certain operating features

Supervisor: dr hab. inż. Krzysztof Michalczyk

Faculty of Mechanical Engineering and Robotics

Abstract: The method of shaping the end coils of a steel helical compression spring has a significant influence on its stability, static rigidity, load capacity associated with wire stresses caused by contact of the coil surface, eccentricity of the reaction force during compression of the spring and its dynamic characteristics. The issue of the influence of the method of shaping the end coils on the aforementioned operating properties is very important due to the wide use of compression springs in all branches of industry. In the literature, one can find studies on some of the issues outlined above, but they do not exhaust this topic. As part of the research, a broad analysis of the above issues is to be carried out, using analytical methods, numerical methods and experiments.

Research facilities: The Department of Machine Design and Technology at the Faculty of Mechanical Engineering and Robotics has laboratories equipped with testing machines enabling to carry out experimental research related to the implementation of the research topic. The Department has also a universal vibration analyser dedicated for dynamic testing. There is also access to scientific computer software that enables numerical modelling of the analysed problems of the reported research topic. There is also the possibility of experimental analysis of phenomena occurring at the contact at the interface of adjacent coils

Number of places: 1

 

42. Analysis of certain operating properties of helical spring with increased damping

Supervisor: dr hab. inż. Krzysztof Michalczyk

Auxiliary supervisor: dr inż. Wojciech Sikora

Faculty of Mechanical Engineering and Robotics

Abstract: Steel helical springs in many cases do not provide adequate vibrational energy dissipation. Therefore, a new solution has been developed that combines the advantages of a helical spring made of steel with increased damping properties characteristic of elastomer springs. Increased damping is obtained by using a proper energy dissipating element cooperating with the spring wire. Various design variants of this solution are possible. Currently, there is no comprehensive information on the static and dynamic properties of springs of this type in the literature. There are also no computational models that allow the selection of the most favourable design parameters for such a spring in a given application. The aim of the research is therefore to determine the relationship between the construction parameters of the analysed spring and its static and dynamic properties.

Research facilities: The Department of Machine Design and Technology at the Faculty of Mechanical Engineering and Robotics has laboratories equipped with testing machines enabling to carry out experimental research related to the implementation of the research topic. The Department has also a universal vibration analyser dedicated for dynamic testing. There is also access to scientific computer software that enables numerical modelling of the analysed problems of the reported research topic.

Number of places: 1

 

43. The analysis of the influence of calcification process on tendon biomechanics

Supervisor: dr hab. inż. Andrzej Młyniec

Faculty of Mechanical Engineering and Robotics

Abstract: Tendon is a multiscale biocomposite which biomechanical properties are still poorly understood. The tendons consist of collagen fibers, bundles and fascicles surrounded by a interfascicular matrix (IFM). The IFM mainly consist of collagen, elastin and proteoglycans (PGs) surrounded by electrolytes. The negatively charged PGs interacting with collagen/elastin and binding with cations (e.g. sodium, potassium, calcium) are responsible for the viscoelastic behavior of the IFM, which controls biomechanics of tendons and therefore the process of failure of these connective tissues. The scientific goal of this project is to analyze the influence of electro-chemo-mechanical factors on the biomechanics of tendon failure by examination of the effect of the calcium and phosphate ions concentration on the biomechanical properties of tendon at different length scales. An additional scholarship is planned (apart from the scholarship received from the AGH - Doctoral School) for PhD Students.

Research facilities: All tests will be done at AGH University of Science and Technology with collaboration with Jagiellonian University, Technishe Universitat Freiburg and Institute of Nuclear Physics Polish Academy of Sciences. In frame of this project, the following methods and research techniques will be used:

  • Static and dynamic strength tests of tendons and fascicles -AGH

  • Nanomechanical strength tests of IFM by means of Atomic Force Microscopy (AFM)

  • Micromagnetic resonance – IFJ PAN

  • Optical and Scanning Electron Microscopy - AGH

  • Immunohistochemical staining – UJ

This project is supported from National Science Center Poland (OPUS program).

Number of places: 1

 

44. Bio-electro-mechanics of collagen-based composite materials

Supervisor: dr hab. inż. Andrzej Młyniec

Faculty of Mechanical Engineering and Robotics

Abstract: Collagen biocomposites, due to the hierarchical structure and high protein content, show features of piezoelectric materials. This is related to the ion flow within the material during mechanical loading. Negatively charged proteins restrict the interstitial fluid flow thus, affecting the mechanical properties of these materials. Therefore, the key role in the biomaterial mechanics will be played by matrix properties and concentrations of the ions. The influence of ion concentration on the electro-mechanical properties of collagen biomaterials has not yet been studied so far and is a key point of this project. The scientific goal of this project is to investigate the influence of bio-electro-mechanical factors on the strength properties of tendons by examination of the effect of the ion concentration using such scientific methods as: numerical modeling and classification using Machine Learning algorithms, strength tests, optical and electron microscopy, Magnetic Resonance Imaging (MRI) and ultrasonography.

Research conducted as part of the project OPUS. An additional scholarship is planned (apart from the scholarship received from the AGH - Doctoral School) for PhD Students.

Research facilities: All tests will be done at AGH University of Science and Technology with collaboration with Jagiellonian University, Technishe Universitat Freiburg and Institute of Nuclear Physics Polish Academy of Sciences. In frame of this project, the following methods and research techniques will be used:

  • Numerical modeling, classification methods using Artificial Intelligence (AI) - AGH

  • Static and dynamic strength tests of tendons and fascicles -AGH

  • Micromagnetic resonance and ultrasonography – AGH & IFJ PAN & CMUJ

  • Optical and Scanning Electron Microscopy - AGH

This project is supported from National Science Center Poland (OPUS program).

Number of places: 1

 

45. Biomimetic identification of material with unique mechanical properties

Supervisor: dr hab. inż. Kinga Nalepka

Faculty of Mechanical Engineering and Robotics

Abstract: The subject of the research are molluscs’ shells of various species. Genetic information passed over many millions of years caused these animals to produce material with extraordinary functional and mechanical properties: light, yet characterized by high strength and fracture toughness. The aim of the work is to identify the key features of this material, so as to obtain a similar one desired in engineering, through biomimetic mapping. The research will be carried out at many levels of the scale: nano-, micro- and macroscopic. The Molecular Dynamics (MD) simulations will be the lowest located and they allow to identify the propagation of cracks within the aragonite and calcite shell structure. Obtained results will be associated with observations conducted at the microscopic level, ie the evolution of stress fields generated in situ in the X-ray diffractometer. This stage of research will be carried out in cooperation with an experienced researcher from the Institute of Metallurgy and Materials Science of the Polish Academy of Sciences in Krakow. In parallel, the PhD student will identify the development of deformation fields registered by the digital image correlation technique (μ-DIC) during subsequent compression tests. The conducted theoretical analyzes and experimental investigations will allow to uncover methods of effective load transfer within the structures of protective armors designed by Nature. The obtained results will form the basis for the production of composites with unique mechanical and functional properties.

Research facilities: The research will be carried out as part of the NCN OPUS 15 project. Multiscale identification of strategies for creating high-strength biocomposites: Sea snail shells, as biomimetic inspiration for light functional materials. It is implemented by three scientific institutions: Faculty of Mechanical Engineering and Robotics (IMIR AGH), Academic Center of Materials and Nanotechnology (ACMIN AGH) and the Institute of Metallurgy and Materials Science of the Polish Academy of Sciences (IMIM PAN), which acts as a coordinator. Identification of mechanisms of effective load transfer within the shell structure will be carried out using the μ-DIC system, which was purchased as an extension of the DIC system. The research will be continued at IMIM PAN and ACMIN AGH, where apart from compression tests in an X-ray diffractometer, microscopic observations will be carried out using SEM and EBSD methods of primary shell structures and final shell structures after loading. Simulations and calculations at the nanometer level will be performed at the Cyfronet AGH on the PROMETHEUS super computer within the framework of the grant Interfacial boundaries as a key for creating materials with unique mechanical and functional properties.

Number of places: 1

 

46. Analysis and development of acoustical logical devices based on nonlinear elastic metamaterials

Supervisor: dr hab. inż. Paweł Paćko, prof. AGH

Faculty of Mechanical Engineering and Robotics

Abstract: The goal of the proposed research is related to the management of mechanical energy flow through the development of acoustical logical elements (ALE) with tunable spectral characteristics. ALEs are intended to control and shape dynamical characteristics of mechanical structures. Their application will contribute to vibration mitigation and noise reduction through performing logical operations on wavefields propagating in the structure. Therefore the aim of the work is to design and manufacture acoustical (i.e. supporting shear and longitudinal waves) devices performing logical operations on wavefields. An important aspect of ALEs will be their dynamic and re-configurable properties, obtained by employing nonlinear material response. The goals will be achieved by designing new nonlinear elastic metamaterials, based on transformation acoustics and structural optimization. In particular, ALEs will be based on acoustical logical gates AND, OR and NOT and units allowing for addition, subtraction and multiplication of wavefields, thus providing building blocks for a smart structure. The designed units will be manufactured by machining and 3D metal printing, and will be experimentally validated against the designed dynamical properties (including its performance in logical operations). Accomplishing the above goals will allow for design of a smart structure composed of structural and logical elements, that will be capable of controlling internal energy flow. The proposed passive structure will be compared to analogous structures without and with active vibration reduction capabilities.

Research facilities: Both the unit and the supervisor publication record provide a solid background for the proposed research topic. Publications in the area of wave propagation, sensor materials design and development, and metamaterials design, have appeared in the most prestigious international journals. The supervisor has led two projects funded by NCBiR related to modeling and development of acoustical devices and is the leader of a new project devoted to nonlinear metamaterials. The proposed research is particularly suited to be carried out within the scope of this latter NCN-funded project. The unit is equipped with highly advanced hardware for measurements of dynamic characteristics of mechanical structures, including spectrum and impedance analyzers and laser vibrometers (including lasers combined with microscope systems).

Number of places: 1

 

47. The use of 2D and 3D imaging methods in the construction of control and measuring machines implementing the quality control task of product on production lines.

Supervisor: dr hab. Inż. Andrzej Sioma

Faculty of Mechanical Engineering and Robotics

Abstract: Production quality control systems have become part of production systems. These systems are installed both in unit production as well as in series production. The tasks performed by the product quality control systems depend on the industry and the range of parameters controlled on the product. The presented research issue includes the development of innovative imaging technologies intended for implementation directly on the production line. This is a very broad issue requiring consideration in the imaging process of technological conditions occurring in various industries. The research will include the development of imaging technology and then preparation for a registered image of analysis algorithms that allow measurements of selected product parameters. The implementation of these tasks also requires the development of machinery or control stations that cooperate with technological machines and industrial robots. The development of new imaging technologies is very important due to the growing requirements for the continuous widening of the scope of control of product parameters.

It was assumed that imaging under specific industrial conditions would take into account the disturbances and measurement requirements set for the quality control system. It will require selecting the type of cameras and the development of image creation technology for which the following algorithms will be developed: image acquisition algorithms, image analysis algorithms, data exchange algorithms with technological machines and database systems

Research facilities: Research work will be carried out in the Laboratory of Automation of Processes and Vision Systems. The laboratory is equipped with 10 vision stations allowing for image acquisition using 2D and 3D technologies. Scientific research is carried out in the laboratory in the field of: development of image calibration methods, 2D and 3D image analysis, creation of innovative measurement algorithms for 2D and 3D imaging, analysis of measurement data and statistical processing of measurement results using databases. The laboratory is also equipped with computer stations, simulators of industrial machines, positions enabling modeling of the production process and specialized imaging stations using 2D and 3D technologies.

Number of places: 2

 

48. Application of multiport theory to determine the acoustic properties of the silencers with complex geometry

Supervisor: dr hab. Anna Snakowska, prof. AGH

Faculty of Mechanical Engineering and Robotics

Abstract: Acoustic field analysis applying multiport theory is a fairly new method, very effective in studying systems with complex geometry, in particular silencers that contain duct-like elements.

This theory is an adaptation of the theory of electrical networks to the acoustic systems and for some time has been the subject of my research. The N-port is a system consisting of N duct-like elements connecting an element with unknown properties, the so called "black box". To obtain a full description of the system acoustic properties (i.e. IL - insertion loss, TL – transmission loss, ect), the transmission matrices (if individual elements form a cascade system) or impedance matrices are determined. However, the most general way is to determine the scattering matrix. The scattering matrix gives the relationship between the pressure of individual modes propagating to the "black box" (pressure) and the "black box" (pressure out).

The research can be conducted theoretically, experimentally, and by means of numerical methods.

This theory is particularly suitable for the analysis of multimode wave propagation, hence above the most commonly used in the literature "plane wave approximation”. However, the construction of effective silencers with large cross-sections or high-frequency excitation also requires accounting for the so-called higher Bessel modes, which in such systems can propagate and be a source of high level noise.

Another issue to be analyzed within this research subject is the presence of a fan or other sound source causing the flow in the system, as well as silencers with microperforated elements inside. The results of such studies would be significant at the design stage.

Research facilities: Research on acoustic systems, in particular silencers, using the multi-port method has been my subject of investigation for several years, and the inspiration was cooperation with the Acoustic Waveguides and Silencers team led by Professor Mats Abom from the Royal Technical University (KTH) in Stockholm. This topic is familiar to me, I am currently preparing two further publications presenting theoretical results supported by numerical calculations. However, there are many issues that require further research, both theoretical and above all experimental.

Initial testing of silencers has already been undertaken as part of the realisation of the grant NCN No. 2011/03 / B / ST8 / 0504, of which I was the manager. Implementation of this grant was also an opportunity to create measuring systems and models of silencers, also with micro-perforated elements, which would be used in the experimental part of the submitted thesis subject. To determine the multimode wave scattering matrix, a single-mode wave generator constructed by the NCN grant team is ideally suited (patented solution).

The existing facilities of the AGH University of Science and Technology where the project is to be carried out, and measurement systems created during realisation of the NCN grant No. 2011/03 / B / ST8 / 0504, allows to predict the positive completion of the research and the doctoral thesis.

Number of places: 1

 

49. Analysis of directivity characteristics of complex geometry acoustical systems

Supervisor: dr hab. Anna Snakowska, prof. AGH

Auxiliary supervisor: dr inż. Łukasz Gorazd

Faculty of Mechanical Engineering and Robotics

Abstract: The directivity characteristic is one of the important properties of the acoustic systems, as it depicts the spatial distribution of energy radiated by the examined object in space. Generally it is presented as a function of the frequency or the Helmholtz number, which links the frequency with the dimensions of the object.

The study of directional characteristics of acoustic systems can be conducted theoretically with the use of a set of eigenfunctions, experimentally - by measuring acoustic pressure or intensity in the far field in free field conditions on a grid of points located on a sphere, and for systems with such a complex geometry that the analytical solution is not known - by numerical methods. The directivity characteristic is a module of the so-called directivity function, usually complex.

Due to the fact that the directional characteristics give the spatial distribution of the acoustic field, the modal analysis is carried out in spherical coordinates using spherical harmonics. It is also possible to extend the description of the field properties produced by the acoustic system by using hyperspherical harmonics. This is a new research problem that may be the subject of a doctoral dissertation. Another research issue related to the modal analysis of directivity characteristics is to shape the desired directivity of sources, for example jet engine outlets, which are a source of high-level noise. The results of such studies would be significant at the design stage.

Research facilities: Research on the problem of the directivity characteristics accounting on diffraction of the sound wave at the edge of the waveguide outlets was part of my postdoctoral thesis, which is why this subject is well known to me. However, there are many problems that require further research, both theoretical and experimental.

The study of directivity characteristics was also undertaken during realization of the NCN grant no. 2011/03 / B / ST8 / 0504, of which I was the manager. Financial support of this grant was also an opportunity to build measurement systems that can be used in the accomplishment of the proposed doctoral dissertation.

Equipment facilities and the possibility of conducting experimental research in free field conditions in the anechoic chamber of the AGH University of Science and Technology, where the project is to be carried out, allows to anticipate the positive completion of the research and the doctoral thesis.

Number of places: 1

 

50. Monitoring of structural condition using nonlinear ultrasonic shear wave characteristics

Supervisor: prof. dr hab. inż. Wiesław Jerzy Staszewski

Auxiliary supervisor: dr inż. Aleksandra Ziaja-Sujdak

Department of Robotics and Mechatronics , Faculty of Mechanical Engineering and Robotics

Abstract: The past decades have marked significant progress in structural design using a variety of new materials. Some developments in this field – that include for example composites and multi-materials offered by additive manufacturing – have been already exploited by designers and engineers. Manufacturing defects, material degradation and in-operational damage (e.g. material fatigues or contact-type defects such as adhesion or debonding) are quite common, and pose many challenges to engineers and require reliable methods for material evaluation with respect to manufacturing quality and structural integrity. However, detection of the incipient material degradation and monitoring for contact-type damage are among the most challenging problems.

The major focus will be on physical explanation of the third harmonic generation and the ultrasonic wave modulation transfer mechanism – that is equivalent to the Luxemburg-Gorky effect observed for electromagnetic waves - will be investigated. Although the linear and nonlinear shear wave propagation have been investigated for decades, both nonlinear effects are still far from being fully understood. Presented work will lead to new theoretical models and numerical tools.

Various classical and non-classical elastic and/or dissipative nonlinear effects will be investigated to explain the described wave propagation effects. The major novelty will be associated with the interaction of shear waves with structural damage that will be modelled using non-frictional and non-hysteretic nonlinear dissipation mechanism that could be linked to thermo-elastic losses and stress concentrations previously observed in polycrystalline materials. Intrinsic nonlinearities associated with material properties or measurement chain will be also investigated in order to separate damage-related nonlinearities from these undesired effects and will also offer a significant level of novelty.

The perturbation approach will be used to tackle the nonlinear wave propagation problem. Numerical simulations will be performed using the Local Interaction Simulation Approach and the Finite Element Modelling. The results will be validated experimentally using simple plate-like adhesively bonded joint components. Following these investigations, a number of new damage detection procedures – based on the third harmonic generation and the nonlinear modulation transfer mechanism in shear wave propagation – will be proposed and demonstrated.

Research facilities: Research work will be carried out within the project „Classical and Non-Classical Shear Wave Nonlinearities: from Physics to Material Evaluation”, which is financed by the National Centre of Science obtained from the SHENG 1 programme. This work will be executed in the cooperation with The Hong Kong Polytechnic University. PhD student will receive additional stipend of 3500 PLN through the duration of 36 months. Moreover, a two-moths long scientific exchange in Hong Kong is planned as well.

AGH University of Science and Technology will provide access to the available research facilities at the Department of Mechatronics and Robotics including Laboratory for Studies of the Structures Dynamics and Laboratory of Non-Destructive Testing. The scientific equipment to be used within this project includes:

  • Scanning Laser Doppler Vibrometers with the robotized 3D SLDV -Polytec PSV400 Robovib 3D: a unique laser system for the 3-D analysis of wave propagation field;

  • Ultrasonic waveform generators/receivers: EC Systems PAQ 16000D, Power amplifiers (EC Systems, FLC Electronics, TREK);

  • Arbitrary waveform generators and acquisition units (Agilent 33522A, Agilent DSO-X 3024A, PICO scopes, National Instrument cards, Spectrum);

  • Photon detector thermal cameras (FLIR Silver and FLIR SC8600);

  • Dynamic strength testing system Instron 8872 with climatic chamber;

Numerical simulations software (Ansys, COMSOL, in-house wave propagation software cuLISA3D), scientific computing software (MATLAB). be carried out, allows to anticipate the positive completion of the research and the doctoral thesis.

Number of places: 1

 

51. Study of the influence of propagation conditions on the deformation of distinctive features of acoustic signals of selected noise sources

Supervisor: dr hab inż. Tadeusz Wszołek, prof. AGH

Department of Mechanics and Vibroacoustics , Faculty of Mechanical Engineering and Robotics

Abstract: Identification of signal features characteristic for a given source is important in the process of recognition and extraction of this signal among other signals and disturbances in both long-term and short-term measurements. Some features of the signal, such as impulsivity, tonality or amplitude modulation, can be used to apply adjustments in the calculation of noise indicators useful in assessing the nuisance of a given noise source. However, as a result of damping and other phenomena on the propagation path of sound in the open space, the characteristic features of a given signal are deformed making it difficult to assess their identification and nuisance. Therefore, as part of the work, research is planned in real world conditions of damping caused by constants (system geometry and shielding elements) and variable (atmospheric conditions) elements on the sound propagation paths and their influence on the change of measurable features of spectral density and time distribution.

The use of statistical methods and artificial intelligence is planned for the analysis and differentiation of signal characteristics.

Research facilities: In Department of Mechanics and Vibroacoustics instrumentation is available for permanent long-term recording of multi-channel acoustic signals and monitoring of weather conditions on the sound propagation path in the environment. It is possible to register the spectrum in constant percentage bands and FFT spectrum with practically any time resolution. Regardless, it is also possible to register wave signals.

Number of places: 2

 

52. Analysis and experimental verification of factors influencing the accuracy of model calculations of industrial noise emissions

Supervisor: dr hab inż. Tadeusz Wszołek, prof. AGH

Auxiliary supervisor: dr inż. Dominik Mleczko

Department of Mechanics and Vibroacoustics , Faculty of Mechanical Engineering and Robotics

Abstract: Noise modelling in the environment takes place primarily in the performance of noise mapping of cities and in the vicinity of roads, railways and airports, but also in the surroundings of industrial plants. The modelling of large industrial plants in which the sources of noise are spread over an area of up to several km2 is of particular importance. Then the distance between the source and the observation point in the environment can be up to several km, and the sound propagation paths can be very diverse. Such situation causes numerous difficulties with the verification of computational models based on the ISO 9613-2 algorithms, and now also using the CNOSSOS algorithms. As part of the work, investigations will be carried out in the field of experimental verification of model calculations of sound propagation in various weather conditions. The basis for the evaluation of the results of calculations will be the analysis of modelling uncertainty and measurements for the model calibration.

Research facilities: In Department of Mechanics and Vibroacoustics instrumentation is available for continuous long-term recording of multi-channel acoustic signals and monitoring of weather conditions on the sound propagation path in the environment. It is possible to register the spectrum in constant percentage bands and FFT spectrum with practically any time resolution. Regardless, it is also possible to register wave signals.

Number of places: 2

 

53. Study of factors affecting the accuracy of airborne sound insulation measurements in laboratory conditions

Supervisor: dr hab inż. Tadeusz Wszołek, prof. AGH

Auxiliary supervisor: dr inż. Dominik Mleczko

Department of Mechanics and Vibroacoustics , Faculty of Mechanical Engineering and Robotics

Abstract: The repeatability of the measurement results of acoustic insulation from airborne sounds is still an unresolved metrological problem. Obtained results of testing the same samples are characterized by a large spread of results, despite the use of unified measurement techniques. Independently, the possibilities of testing samples of smaller sizes are sought as a more useful and cheaper solution. As part of the work, the partial uncertainty brought in by the structural parameters of the sample and the method of its assembling as well as the applied measuring technique, including the type of the excitation signal, will be investigated.

Research facilities: The research will be carried out in a complex of reverberation chambers at the Department of Mechanics and Vibroacoustics, adapted to such tests. Directly, tests are carried out in a measuring window with a size of 1 x 2 m, in which you can install a smaller window. Samples for testing of the same type are also available in two sizes: 1x2 m and 0.7 x 0.7 m. Complete measuring equipment is also available for generating and simultaneous recording of acoustic signal in both rooms, including measuring the reverberation time.

Number of places: 2

 

54. Controlling the flow of materials in complex production structures

Supervisor: prof. dr hab. inż. Edward Michlowicz

Faculty of Mechanical Engineering and Robotics

Abstract: Systemic approach allows to see the production enterprise as a complex system of production and auxiliary facilities. In process approach, manufacturing makes the stream of materials flow through individual production cells in a mixed (serial - parallel) or cellular system, in a discreet way (in steps). Processing times are different at each stage. Element that connects individual production facilities are interoperable landfills, which perform the functions of semis storage departing from object N and magazine of deliveries for the next (N + 1) or another station. Chart flow of deliveries and acceptances at the time takes the stepped form. Parameters of steps depend on the processing time and batch size. In the actual manufacturing process (even in the long term), lines of supply and efficiency do not run parallel. In order to obtain appropriate productivity indicators, it is necessary to control the flow of materials and information. The aim of the work is to optimize material flows using lean methods.

Research facilities: Research will be carried out in manufacturing companies. Virtual models will be developed in the Department of Manufacturing Systems, including in the WITNESS object simulator.

Number of places: 1

 

55. Development of a test system for an efficient nondestructive testing of thin-walled structures with use of the full-field guided waves propagation field

Supervisor: dr hab. inż. Łukasz Pieczonka

Faculty of Mechanical Engineering and Robotics

Abstract: Ultrasonic guided waves are successfully used for nondestructive testing (NDT) and structural health monitoring (SHM) of thin-walled structures. However, due to the complex nature of guided waves, especially their multi-modality and dispersion, their use in structural diagnostics is not trivial. One of the most promising and robust approaches for the detection and imaging of damages based on guided waves is the local wavenumber spectroscopy method. The goal of this research task is the development of a test system utilizing contact and noncontact excitation of ultrasound, by means of piezoceramic transducers or laser pulses, respectively. The acquisition of the wave field evolution will be performed with use of a scanning laser Doppler vibrometer (SLDV) or a continuous scanning laser doppler vibrometer (CSLDV). In addition, due to the practical considerations regarding the surface quality of the test samples, it is envisioned to use a near infrared vibrometer working at ~1550 nm wavelength rather than the popular 633 nm wavelength vibrometer. The work will be performed in collaboration with international partners.

Research facilities: The Department of Robotics and Mechatronics is well equipped with the state of the art research equipment necessary to perform the research within this task including: (i) A set of Scanning Laser Doppler Vibrometers incluing the robotized 3D SLDV - Polytec PSV400 Robovib 3D; 1D SLDV Polytec PSV400; 1D SLDV Micro Systems Analyzer MSA 500, as well as in-house design interferometer for high precision non-contact vibration measurements; (ii) Ultrasonic waveform generators/receivers and power amplifiers; (iii) high power lasers for ultrasound generation; (iv) Photon detector thermal cameras and compact size microbolometer thermal cameras from FLIR; (v) Vibrothermography test system – in-house design; (vi) Numerical simulations software (Abaqus, COMSOL, LS-Dyna, MSC.Software); (vii) Scientific computing software (Matlab, Python) and software development platforms; (viii) computational servers (CPU and GPGPU) and access to the ACK Cyfronet Prometheus supercomputer.

Number of places: 2

 

56. Development of novel damage detection methods in engineering materials with use of nonlinear acoustics.

Supervisor: dr hab. inż. Łukasz Pieczonka

Faculty of Mechanical Engineering and Robotics

Abstract: The goal of this research task is the development of nondestructive testing methods (NDT) based on the analysis of the nonlinear vibrational response of a material. It has been shown in the scientific literature that the nonlinear techniques can be much more sensitive to the small damage severities than their linear counterparts. Their application requires, however, that sufficiently high strains are generated in the material in order to activate the nonlinear mechanisms. To achieve this it is envisioned to apply the global pump-probe techniques (vibro acoustic modulation technique, non-collinear wave mixing), the resonance techniques (nonlinear resonant ultrasound spectroscopy) as well as self-focusing of elastic waves (Time Reversal) allowing for local probing of the material. Fulfillment of this research task will require experimental investigations supported by theoretical analysis and numerical simulations. The work will be performed in collaboration with international partners.

Research facilities: The Department of Robotics and Mechatronics is well equipped with the state of the art research equipment necessary to perform the research within this task including: (i) A set of Scanning Laser Doppler Vibrometers incluing the robotized 3D SLDV - Polytec PSV400 Robovib 3D; 1D SLDV Polytec PSV400; 1D SLDV Micro Systems Analyzer MSA 500, as well as in-house design interferometer for high precision non-contact vibration measurements; (ii) Ultrasonic waveform generators/receivers and power amplifiers; (iii) high power lasers for ultrasound generation; (iv) Photon detector thermal cameras and compact size microbolometer thermal cameras from FLIR; (v) Vibrothermography test system – in-house design; (vi) Numerical simulations software (Abaqus, COMSOL, LS-Dyna, MSC.Software); (vii) Scientific computing software (Matlab, Python) and software development platforms; (viii) computational servers (CPU and GPGPU) and access to the ACK Cyfronet Prometheus supercomputer.

Number of places: 2

 

57. Development of novel damage detection methods in structural materials with use of active thermography

Supervisor: dr hab. inż. Łukasz Pieczonka

Faculty of Mechanical Engineering and Robotics

Abstract: The goal of this research task is the development of new modalities of active thermography imaging of structural damages. In particular, the low power vibrothermography utilizing local defect resonances and laser thermography approaches will be studied. The application of these approaches are mainly thin-walled structures especially made of composite materials. The work will be performed in collaboration with international partners.

Research facilities: The Department of Robotics and Mechatronics is well equipped with the state of the art research equipment necessary to perform the research within this task including: (i) A set of Scanning Laser Doppler Vibrometers incluing the robotized 3D SLDV - Polytec PSV400 Robovib 3D; 1D SLDV Polytec PSV400; 1D SLDV Micro Systems Analyzer MSA 500, as well as in-house design interferometer for high precision non-contact vibration measurements; (ii) Ultrasonic waveform generators/receivers and power amplifiers; (iii) high power lasers for ultrasound generation; (iv) Photon detector thermal cameras and compact size microbolometer thermal cameras from FLIR; (v) Vibrothermography test system – in-house design; (vi) Numerical simulations software (Abaqus, COMSOL, LS-Dyna, MSC.Software); (vii) Scientific computing software (Matlab, Python) and software development platforms; (viii) computational servers (CPU and GPGPU) and access to the ACK Cyfronet Prometheus supercomputer.

Number of places: 2

 

58. Innovative noise barrier in the urban environment.

Supervisor: dr hab. inż. Janusz Piechowicz

Faculty of Physics and Applied Computer Science

Abstract: The noise screen can be effective if it is properly designed. The aim of the research program is model calculations, verified in the environment, distribution of noise levels that occur with different acoustic characteristics (absorption of facades, soil, asphalt or green elements) and geometric characteristics (road width, building height, presence of balconies, etc.). The result of the research will be modern material and construction solutions of effective acoustic screens, at the same time friendly to man and the environment.

Research facilities:

Number of places: 1

 

59. Vibroacoustic parameter study of a detailed numerical contact model for the tyre/road interaction.

Supervisor: dr hab. inż. Janusz Piechowicz

Faculty of Physics and Applied Computer Science

Abstract: Rolling resistance, traction forces, wear, excitation of vibrations, and noise generation are all parameters to consider in optimisation of the tyre/road interaction. The key to achieving this optimization is to consider a number of phenomena in the contact description. The project aims to study the behavior of the contact itself. The study will be conducted with the acoustic imaging method using a microphone array.

Research facilities:

Number of places: 1

 

60. Sound quality analysis of household appliances.

Supervisor: dr hab. inż. Janusz Piechowicz

Faculty of Physics and Applied Computer Science

Abstract: The sound quality properties of house appliances is important research area since this devices are commonplace in home. The project concerns subjective and objective evaluation of a number of binaurally recorded house appliances sounds. How do we perceive these sounds? Why is it that at times they are not attention grabbing or irritating us? How do our emotional states influence our acceptance or rejection of these devices sounds? Sound Quality deals with human perception of sound and how adequate that perception is for the product in question. The purpose of this project is to find methods of rating the parameters influencing the sound quality perception of house appliances. This can be done using neural networks being trained on suitably reduced measurement data and listening test results.

Research facilities:

Number of places: 1

 

61.The development of diagnostic methods and design of mechatronic diagnostic and rehabilitation equipment

Supervisor: dr hab. inz. Marek Iwaniec, prof. AGH

Faculty of Physics and Applied Computer Science

Abstract: The proposed issue includes development of modelling and analysis methods of technical and anthropotechnical systems of various nature - mainly mechanical or acousto-electric. Development of methods for biomechanical examination of physiological functions, in particular of the respiratory system and motion system. Design of measurement systems dedicated to the investigation into physiological functions and complex anthropotechnical systems in laboratory and real conditions. Development of research methods aimed at obtaining diagnostic knowledge and knowledge needed to construct mechatronic devices for diagnostic, rehabilitation or supporting human function, e.g. exoskeletons, orthoses, etc. An important issue is increasing the efficiency of devices through the implementation of methods and subsystems used for energy recovery. The utilitarian effect of research works are projects, modification and optimization of technical solutions, among others based on the analytical description with the use of motion equations, energy analysis, FEM analysis, etc.

Research facilities: Department of Process Control has a laboratory equipped with research equipment, among others multi-channel, telemetric measuring systems, vision systems, sets of sensors for measuring various physical quantities and medical equipment such as EKG, treadmill, podometer, otoscope, etc.

Number of places: 1

 

62. Sustainable approach to transport devices exploitation process

Supervisor: prof. dr hab. inż. Janusz Szpytko

Faculty of Mechanical Engineering and Robotics

Abstract: To develop a methodology able to improve the exploitation efficiency of a selected transport devices set both under operation and maintenance processes under limited resources and which operating in critical infrastructure.

Research facilities: Laboratory of automated systems and transport devices: an overhead bridge crane, control and measurement equipment located in the laboratory enables conducting research in the field of control and supervision systems for technological transport equipment and measurements of selected operational parameters of selected transport devices. Control and measurement devices and video cameras enabling visualization of transport processes carried out by a crane located in the laboratory and other specialized software, Wonderware System Platform 3.0, InTouch 10.0 visualization system used in manufacturing process management and other specialized.

Laboratory of automated technological transport devices and telematics: autonomous AGV forklift truck, pole crane, KBK suspended system, HDS crane, roller conveyor, rack stacker, control and measuring tools and video cameras enabling visualization of transport processes, Wonderware System Platform 3.0 software, InTouch 10.0, others.

Number of places: 2

 

63. Supervision system for critical cranes operating in digital type industry

Supervisor: prof. dr hab. inż. Janusz Szpytko

Faculty of Mechanical Engineering and Robotics

Abstract: Development of a concept of self-diagnosis method of overhead type cranes operated in critical systems digitally supervised with the possibility of purposeful selfconfiguration of transport devices as a function of existing technological transport needs and their technical properties.

Research facilities:  Laboratory of automated systems and transport devices: an overhead bridge crane, control and measurement equipment located in the laboratory enables conducting research in the field of control and supervision systems for technological transport equipment and measurements of selected operational parameters of selected transport devices. Control and measurement devices and video cameras enabling visualization of transport processes carried out by a crane located in the laboratory and other specialized software, Wonderware System Platform 3.0, InTouch 10.0 visualization system used in manufacturing process management and other specialized.

Laboratory of automated technological transport devices and telematics: autonomous AGV forklift truck, pole crane, KBK suspended system, HDS crane, roller conveyor, rack stacker, control and measuring tools and video cameras enabling visualization of transport processes, Wonderware System Platform 3.0 software, InTouch 10.0, others.

Number of places: 2

 

64. Development and integration of a cleaning system for a pulverized coal-fired boiler inspection robot.

Supervisor: dr hab. inż. Tomasz Buratowski, prof. nadzw. AGH

Department of Robotics and Mechatronics, Faculty of Mechanical Engineering and Robotics

Abstract: The research problem involves development, integration with electromechanical structure and implementation of a control system for a mobile robot. The robot shall perform inspection of pulverized coal-fired boilers

Research facilities: SLAM laboratory, mobile robots laboratory, drives and control laboratory.

Number of places: 1