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Ústav konstruování - závěrečné práce

DISSERTATION TOPICS

DISSERTATION TOPICS

Results

Development of 3D printed implant for local articular cartilage replacements
Vývoj 3D tištěného implantátu pro lokální náhrady kloubní chrupavky

Aim of thesis: The aim of the research is to describe the tribological behaviour of newly developed implants for local replacement of articular cartilage defects. This is an experimental work based on the use of a combination of universal tribological simulators, unique biotribological simulators and optical methods. It is envisaged to test suitable biocompatible materials such as titanium alloys produced by additive Selective Laser Melting technology, CoCrMo alloys and advanced biomaterials such as PEEK or hydrogel.
  • - Cooperation with the implant manufacturer ProSpon, spol. s r. o. - Cooperation with the Second Faculty of Medicine, Charles University and Motol University Hospital (prof. Havlas). - Involvement in upcoming project calls OP TAK, TAČR Trend, AZV.
Supervisor: prof. Ing. Martin Vrbka, Ph.D.
Co-supervisor: Ing. Matúš Ranuša, Ph.D.

Prediction of wear of dental filling materials during tooth cleaning
Predikce opotřebení dentálních výplňových materiálů při čištění zubů

Aim of thesis: The research focuses on the analysis of the wear of dental filling materials due to toothbrushing and toothpaste during daily oral hygiene. This is an experimental work in which the effects of the tooth filling material, the shape of the end and hardness of the toothbrush fibres, the abrasiveness of the toothpaste and the effect of the use of manual and electric toothbrushes will be discussed.
  • Cooperation with cosmetic companies SynCare Plus, spol. s r. o. and Nobilis Tilia, spol. s r. o. Cooperation with the research group Advanced Biomaterials at CEITEC BUT in Brno.
Supervisor: prof. Ing. Martin Vrbka, Ph.D.
Co-supervisor: Ing. Pavel Čípek, Ph.D.

Research of thin hydrostatic films considering the combined effects of key influencing factors
Výzkum tenkých hydrostatických filmů zohledňující komplexní vliv klíčových faktorů

Aim of thesis: The aim is to develop experimentally validated numerical model describing the flow and performance parameters in thin gaps of large-scale hydrostatic bearings, considering the influential factors of elastic deformation, geometrical errors, asymmetrical loading, thermal effects, and flow control.
  • Involvement in the solution of the GAČR LA international project The possibility of an internship with the co-investigator of the project - Gdansk University of Technology
Supervisor: doc. Ing. Petr Svoboda, Ph.D.
Co-supervisor: Ing. Michal Michalec

Increasing performance parameters of hydrostatic bearing
Zvyšování výkonnostních parametrů hydrostatického ložiska

Aim of thesis: The aim is manufacturing and power optimization of the pocket and recess geometry of a large-scale hydrostatic bearing using CFD simulation with experimental verification. This is an experimental research work leading to the reduction of the loss factor and energy efficiency of hydrostatic bearings.
  • Involvement in project solutions. Internship at a foreign university.
Supervisor: doc. Ing. Petr Svoboda, Ph.D.
Co-supervisor: Ing. Michal Michalec

Influence of non-stationary electric field on behavior of ionic liquids
Vliv nestacionárního elektrického pole na chování iontových kapalin

Aim of thesis: The aim is to clarify the mechanism of forming a lubricating film in highly loaded contacts lubricated by ionic liquids under the influence of an unsteady electric field. This is an experimental work based on the use of colorimetric interferometry, which includes the development of an experimental simulator for measuring the friction, thickness and temperature of the lubricant.
  • Internship at a foreign university.
Supervisor: doc. Ing. Petr Svoboda, Ph.D.
Co-supervisor: Ing. Petr Šperka, Ph.D.

Research and development of hydrogel-based artificial cartilage
Výzkum a vývoj umělé kloubní chrupavky na bázi hydrogelu

Aim of thesis: The main goal of the topic is in research, development and complex description of the hydrogel-based material, which may be potentially used to replace joint cartilage. The research is based on experimental investigation using biotribological simulators and the evaluation of mechanical and viscoelastic properties. The outcome of the thesis will be represented by the material, which can be used for partial or complete cartilage replacement without the need for the application of total joint replacement.
  • Cooperation with CEITEC BUT, Kyushu University in Japan, internship abroad.
Supervisor: doc. Ing. David Nečas, Ph.D.
Co-supervisor: Ing. David Rebenda, Ph.D.

Development of a magnetorheological shock attenuation system for military applications
Vývoj magnetoreologického systému tlumení rázových dějů pro armádní aplikace

Aim of thesis: In military applications, effective shock attenuation is an important requirement. This may include damping of gun recoil, damping of seats in the event of a vehicle explosion or fall, and more. Current scientific contributions reveals that the combination of a magnetorheological (MR) suspension system together with semi-active control can be a significant advance in this area. Typically, piston velocities are in the units of m/s and high damping forces are achieved. These are therefore quite extreme operating conditions for dampers. The main focus of this work will be study of the behaviour of MR fluid at high velocities and the subsequent application of this knowledge to the design of a magnetorheological damper. The design of sensors and damper control will be important as well. The main focus of the work will be the development and experimental verification of MR suspension systems operating at high piston velocities.
  • Current issues researched in cooperation with the industrial partner Excalibur arms and within the European Defence Agency research project.
Supervisor: doc. Ing. Milan Klapka, Ph.D.
Co-supervisor: Ing. Zbyněk Strecker, Ph.D.

Research on noise generation and propagation in rail transport
Výzkum vzniku a šíření hluku v kolejové dopravě

Aim of thesis: Noise generated by the operation of rolling stock is an ongoing social problem. One of the main sources of strong noise is wheel-rail contact. In the case of abnormal operating conditions, excessive lateral vibration of the wheel can occur, leading to the emission of a strong acoustic signal. Although some hypothetical mechanisms of wheel-rail contact noise behaviour have been described, a number of phenomena have still not been satisfactorily investigated. Especially in the context of the modern approach of adhesion management on risky track sections through the application of liquid or solid substances to the surface or sides of the rail. The aim of this thesis is to investigate the influence of operating conditions in modified contact on the occurrence of unwanted noise and its propagation to the surroundings.
  • Current issues researched in cooperation with the Brno city public transport company.
Supervisor: doc. Ing. Milan Klapka, Ph.D.
Co-supervisor: Ing. Radovan Galas, Ph.D.

Advanced bearing diagnostics for wind farms
Pokročilá diagnostika ložisek pro větrné elektrárny

Aim of thesis: Wind power (WPP) is one of the world's most widespread alternative sources of electricity. The desire to maximize the efficiency of the plant leads to high demands on the mechaniocal design and high reliability of all structural components. Critical components include the driveline bearings. Due to the time-varying loads, it is difficult to reliably determine their service life. At the same time their failure during operation must be prevented, as the entire turbine can be heavily damaged and high reapair cost will be required. The aim of this work is to develop an advanced predictive diagnostic method for monitoring the technical condition of the wind turbine bearings using non-destructive testing methods.
  • Cooperation with an industrial partner - manufacturer of non-destructive testing equipment DAKEL.
Supervisor: doc. Ing. Milan Klapka, Ph.D.
Co-supervisor: Ing. František Vlašic, Ph.D.

Superlubricity of articular cartilage
Superlubricita kloubní chrupavky

Aim of thesis: The aim of the research is tribological and biochemical description of the principles of articular cartilage superlubricity. Methodologically, it is an experimental work based on the use of a combination of biotribological simulators and fluorescence microscopy. The sub-objectives are the development of a faithful tribological model of the synovial joint representing the biological system and the subsequent implementation of experimental analyses aimed at visualizing the lubrication film including the evolution of the friction coefficient over time.
  • Cooperation with the Advanced Biomaterials research group at CEITEC Brno University of Technology. The dissertation will be solved within the prestigious project MEBioSys (Mechanical Engineering of Biological and Bio-inspired Systems).
Supervisor: prof. Ing. Martin Vrbka, Ph.D.
Co-supervisor: doc. Ing. David Nečas, Ph.D.

Additive manufacturing of high temperature alloys strenghten by nanoparticle dispersion
Aditivní příprava vysokoteplotních slitin zpevněných disperzí nanočástic

Aim of thesis: The main goal of the work will be to develop and optimize the parameters of 3D printing of precipitation-hardened nickel superalloys with added incoherent boride-based nanoparticles and to determine the relationship between the microstructure and the basic mechanical properties of the newly prepared alloys. Among the sub-objectives of the work will be the preparation of powder mixtures of nickel superalloys using a three-axis electromagnetic vibrating mixer with a graded proportion of reinforcing nanoparticles. Subsequent microstructural analysis using electron microscopy of both powders and 3D printed materials before and after uniaxial mechanical loading at temperatures up to 1000 °C is expected.
  • Topic is in cooperation with the Institute of Materials Physics of the Academy of Sciences of the Czech Republic
Supervisor: doc. Ing. Daniel Koutný, Ph.D.

3D metal printing of magnetic circuits
3D tisk magnetických obvodů

Aim of thesis: The aim of the topic is the research and development of structured magnetic circuits produced by the 3D metal printing method. The design of the magnetic circuits will be based on the patented technology of the Research team Technical Diagnostics (EP3373311). This technology will allow the development of highly efficient magnetic circuits. Development can be focused to several areas, such as electromagnetic actuators, valves or sensors.
  • It is expected to cooperate with an industrial partner in the field of magnetic circuits. The possibility of an internship at the TU Dresden (Germany) and the University of Edinburgh (Great Britain).
Supervisor: doc. Ing. Michal Kubík, Ph.D.
Co-supervisor: Ing. Zbyněk Strecker, Ph.D.

Energy efficient electric motors
Energeticky efektivní elektromotory

Aim of thesis: The goal of the topic is the design development of an electric motor using a structured magnetic circuit produced by the method of 3D metal printing. It is expected that a suitable design of the structured magnetic circuit should increase the efficiency of the electric motor, reduce its weight and at the same time improve cooling. The design of the magnetic circuit will be based on the patented technology of the Department of Technical Diagnostics (EP3373311).
  • It is expected to cooperate with an industrial partner in the field of magnetic circuits. The possibility of an internship at the TU Dresden (Germany) and the University of Edinburgh (Great Britain).
Supervisor: doc. Ing. Michal Kubík, Ph.D.
Co-supervisor: Ing. Zbyněk Strecker, Ph.D.

A new generation of joint implants based on the use of 2D nanomaterials
Nová generace kloubních implantátů s využitím 2D nanomateriálů

Aim of thesis: The aim is to research and develop a new generation of joint implants using 2D nanomaterials, which allow superlubricity conditions to be reached and thus ensure the replacement operation under extremely low friction coefficient and nearly zero wear. It is supposed that 2D materials represent a milestone in many engineering disciplines, including biomedical engineering. Cooperation with the academic and private sectors is planned within the topic, while the outcome of the thesis is in a new-generation implant which will be biocompatible and suitable for clinical testing.
  • Cooperation with the Pontifical Catholic University of Chile, internship abroad.
Supervisor: doc. Ing. David Nečas, Ph.D.
Co-supervisor: prof. Ing. Martin Vrbka, Ph.D.

Dynamic behavior of magnetically active elastomers
Dynamické chování magneticky aktivních elastomerů

Aim of thesis: Intensive research is currently underway in the field of magnetically active elastomers and their applications. These materials can reversibly change stiffness, damping or geometry depending on the applied external magnetic field. The aim of the topic is to describe the influence of the composition, method of loading and production of magnetically active elastomers on their transient behavior. The topic also includes the development of an experimental device that will enable effective and accurate measurement of the time constants of these materials.
  • Possibility of an internship at TU Dresden in the team of Dr. Borin or an internship at the Malaysia-Japan Institute of Technology in the team of prof. Mazlan.
Supervisor: doc. Ing. Michal Kubík, Ph.D.

4D printing of magnetically active materials
4D tisk magneticky aktivních materiálů

Aim of thesis: Intensive research and development is currently underway in the field of magnetically active elastomers or hydrogels, which can be produced using so-called 4D printing. 4D printing is a new and completely unique technology that allows printing dynamic 3D structures capable of changing their shape over time. This topic aims to develop equipment and methodology for 4D printing of magnetically active elastomers and hydrogels. Part of the work will be the application of this technology to the issue of micro-robotics.
  • Possibility of an internship at TU Dresden in the team of Dr. Borin or an internship at the Malaysia-Japan Institute of Technology in the team of prof. Mazlan.
Supervisor: doc. Ing. Michal Kubík, Ph.D.
Co-supervisor: Ing. Zbyněk Strecker, Ph.D.

Advanced downhill bike suspension
Pokročilé odpružení sjezdového kola

Aim of thesis: The goal of the thesis will be to develop an intelligent suspension system for electric mountain bikes. Current commercially available electrically controlled wheel suspension systems do not utilize the potential of rapid semi-active control. Current systems only enable automatic valve control, which has to be adjusted manually in older dampers and is not able to ensure better-driving characteristics. Fast semi-active damping with magnetorheological dampers enables a qualitative shift in achievable driving comfort and wheel grip on the road. Demonstrators of individual components are currently being developed. However, these components will have to be integrated into the entire functional system and experimentally verify the functionality. The work will focus mainly on identifying the limiting properties of real system elements (dampers, sensors, etc.) and the subsequent design of optimal system control.
  • Cooperation with a commercial partner in the field of mountain bike production and their suspension is assumed.
Supervisor: doc. Ing. Michal Kubík, Ph.D.
Co-supervisor: Ing. Zbyněk Strecker, Ph.D.

Hybrid lubrication coatings for space applications
Hybridní mazací povlaky pro kosmické aplikace

Aim of thesis: The aim of the research is to explain the functioning of hybrid lubricant layers consisting of a thin liquid lubricating film and a MoS2-based sliding coating. The behaviour of these layers in pilot studies shows a synergistic effect of both lubrication components and a significant extension of the layers' lifetime. The lubrication layers developed in the later part of the work will then find applications in aerospace components such as bearings, actuators, gears, etc.
  • Attractive topic of technology development for space mechanisms, Cooperation with the application sector, Cooperation with the European Space Agency (ESA)
Supervisor: prof. Ing. Ivan Křupka, Ph.D.
Co-supervisor: Ing. David Košťál, Ph.D.

Multi-material 3D printing of spatialy shaped interfaces
Multi-materiálový 3D tisk prostorově tvarovaných rozhraní

Aim of thesis: The topic is focused on the research of the influence of process parameters on the interface of two metallic materials created using the additive process of laser powder bed fusion (LPBF) and the description of the dispersion of stress waves and the attenuation of kinetic energy at these interfaces. The work is experimental and includes modification of testing device, testing of production strategies and parameters, and study of the interface for combinations of copper alloy (CuCr1Zr) and stainless steel (AISI 316L). To achieve spatially shaped interfaces, the description of a simple interface, sandwich structures up to more complex spatial shapes is assumed.
  • Involvement in the basic research project of GACR.
Supervisor: doc. Ing. Daniel Koutný, Ph.D.
Co-supervisor: Ing. Martin Malý, Ph.D.

Multistable shape-changing metamaterials
Multistabilní metamateriály proměňující tvar

Aim of thesis: The topic of the work deals with the investigation of switchable metamaterials inspired by natural forms, arranged in lattices and achieving structural bistability. The work involves the development of metamaterial configurations using advanced computer modeling tools, followed by laser powder bed fusion (L-PBF) additive manufacturing and experimental testing.
  • 6 months internship at TU Wien
Supervisor: doc. Ing. Daniel Koutný, Ph.D.
Co-supervisor: Ing. Ondřej Červinek, Ph.D.

Topology optimization of additively manufactured coolers
Topologická optimalizace aditivně vyráběných chladičů

Aim of thesis: The topic is focused on the creation of a methodology for designing a new generation of additively produced heat exchangers, using structured materials, meeting all strength requirements while minimizing weight and at the same time allowing to control the distribution of the cooling medium according to the needs of a specific application. As part of the solution to the topic, it is assumed that the existing algorithms of multi-level topological optimization for the purposes of heat exchange will be modified. In addition to changing the stiffness within one component, the algorithm should also allow local control of the cooling performance. Experimental samples as well as functional parts will be realized through metal additive SLM technology, and information on the flow and thermal properties of the structures will be obtained from cooperation with the Institute of Process Engineering.
  • Cooperation on the project solution of the OP JAK MeS program with the involvement of the Academy of Sciences of the Czech Republic and VŠCHT.
Supervisor: doc. Ing. Daniel Koutný, Ph.D.
Co-supervisor: Ing. Ondřej Vaverka

Development of diagnostic method for testing of the active suspension
Vývoj diagnostických metod pro testování aktivních odpružení

Aim of thesis: With the development of electric vehicles and the increasing comfort and safety requirements of passenger cars and motorcycles, actively controlled suspension systems are becoming used with increased trend. Such suspension can adapt its characteristics to the operating conditions. In the case of a semi-actively controlled suspension, the control algorithm can not only react to the immediate driving conditions but also compensate for minor or slowly developing wear on suspension components such as shock absorbers. At present, there is no reliable test method available to assess the correct function of actively controlled suspension. The aim of this work would be to develop a method that would allow correct function of the suspension to be diagnosed and possibly detect some common faults, e.g. increased shock absorber wear etc.
  • Cooperation with Modulartest, a manufacturer of test equipment for passenger vehicles.
Supervisor: doc. Ing. Milan Klapka, Ph.D.
Co-supervisor: doc. Ing. Ivan Mazůrek, CSc.

Development of the measuring system for monitoring and protection of plant grow
Vývoj měřicího systému pro monitoring a ochranu rostlin

Aim of thesis: The trend towards efficient use of natural resources affects a wide range of sectors, including agriculture. For proper plant growth, it is essential to choose the right irrigation method to avoid underwatering or overwatering the plant and possibly wasting water. To decide whether a plant needs watering, it is necessary to know its current condition. As previous research has shown, plant condition can be reliably monitored using the acoustic emission (AE) method, which has emerged as a sensitive method for diagnosing fatigue damage to bearings. Based on the data obtained from AE sensors, decisions can be made about watering and possibly the dosage of additional soil nutrients, etc. AI control can also be used to make decisions. Automated control can then be used for automated irrigation systems for greenhouses or for hydroponics, etc. The aim of the work is then to develop a suitable measurement method that allows reliable monitoring and to develop an algorithm for evaluating the data obtained.
  • Cooperation with the manufacturer of measuring technology DAKEL and the company Compactive, s.r.o., which develops smart irrigation systems.
Supervisor: doc. Ing. Milan Klapka, Ph.D.
Co-supervisor: Ing. František Vlašic, Ph.D.

Transient phenomena affecting friction in point contacts
Přechodové jevy ovlivňující tření v bodových kontaktech

Aim of thesis: The aim of the project is to provide experimental evidence of the transient behaviour of point contacts in the presence of water-solids suspension when friction drop occurs and to explain the nature of this phenomenon based on optical observation of the contact. Further emphasis is placed on describing the scope of the problem in terms of contact conditions and rheological parameters of suspension.
  • Cooperation on a fundamental research project with a research centre in Austria
Supervisor: prof. Ing. Ivan Křupka, Ph.D.
Co-supervisor: Ing. Milan Omasta, Ph.D.

Modelling the transient behaviour of suspensions in point body contacts
Modelování přechodového chování suspenzí v bodových kontaktech těles

Aim of thesis: The work is focused on the use of CFD/DEM methods to model the behaviour of water and solids suspension in concentrated contacts. The aim is to provide a theoretical explanation of the transient behaviour associated with drop in friction in these contacts.
  • Part-time job at a research centre in Austria
Supervisor: prof. Ing. Ivan Křupka, Ph.D.
Co-supervisor: Ing. Milan Omasta, Ph.D.

Experimental research on tribological phenomena using acoustic emission
Experimentální výzkum tribologických procesů pomocí metody akustické emise

Aim of thesis: The work aims to experimentally study the operational and limit states of tribological contacts, especially plain bearings, using the acoustic emission method. The purpose is to implement an advanced method for condition monitoring and bearing diagnosis in the testing or operational phase.
  • Cooperation with industry and use of unique observation techniques
Supervisor: prof. Ing. Martin Hartl, Ph.D.
Co-supervisor: Ing. Milan Omasta, Ph.D.

Particle emissions from the wheel-rail interface
Emise částic z rozhraní kolo-kolejnice

Aim of thesis: The work deals with experimental research on the emission of particulate matter from the wheel-rail interface, especially during the application of lubricants and materials for traction enhancement or as a result of wear process. The aim is to describe the critical factors influencing their formation and effect on the environment.
  • Work combining laboratory experiments and real track measurements
Supervisor: prof. Ing. Martin Hartl, Ph.D.
Co-supervisor: Ing. Milan Omasta, Ph.D.

Alternative adhesion recovery methods in rail transportation
Alternativní metody pro obnovu adheze v kolejové dopravě

Aim of thesis: The work focuses on experimental research into alternative adhesion recovery methods in rail transportation (application of water, new solid materials, etc.). The aim of these methods is to reduce rail and wheel wear, surface damage, and the amount of particles released into the air. The effectiveness of these newly developing methods will be compared with sanding, which represents the conventional method for adhesion restoration.
  • Testing on tram tracks.
Supervisor: prof. Ing. Martin Hartl, Ph.D.
Co-supervisor: Ing. Radovan Galas, Ph.D.

Experimental research of piston machines lubrication
Experimentální výzkum mazání pístových strojů

Aim of thesis: The aim of the work is to clarify what lubrication principles occur in piston contact machines, where the cylindrical piston operates in the cylinder bore, and the geometry of the two components is very close to each other. It is related to the problem of lubrication of bodies with nominally parallel surfaces. The work will include lubrication film measurements on simulators with transparent bodies for optical insight into the contact. The new knowledge will allow the development of performance-optimized machines with the analogical geometry.
  • Measurements on world unique experimental equipment, cooperation with national and international universities
Supervisor: prof. Ing. Martin Hartl, Ph.D.
Co-supervisor: Ing. Petr Šperka, Ph.D.

Development of solid lubrication layer with increased moisture resistance
Vývoj pevné mazací vrstvy se zvýšenou odolností vůči vlhkosti

Aim of thesis: The aim is to develop innovative solid lubrication layers, which are used for lubrication in vacuum and cryogenic applications, with increased resistance to operation in humid atmospheres. The intent is to experimentally study the effect of doped solid lubrication layers on friction and wear with cyclic changes in humid and inert atmospheres. Original optical methods will be used for on-line evaluation of the surfaces during the test. Solid lubrication layers will be realized in collaboration with other departments.
  • Development of technologies with significant impact and patent potential; participation in research projects
Supervisor: prof. Ing. Ivan Křupka, Ph.D.
Co-supervisor: Ing. Petr Šperka, Ph.D.

Friction modelling in contacts of engineering plastics and metals
Modelování tření v kontaktech technických plastů a kovů

Aim of thesis: The aim of this work is to study the frictional behaviour of contacts between engineering plastics and metals by means of FEM analyses and novel experiments. The contact problem of contact between a compliant body and a non-rigid plate will be solved numerically and the results compared with experiments. New experimental approaches will be used where the surface distribution of the joint between the bodies will be measured using optical methods while recording the friction. The results have the potential to find application in a wide range of applications where modelling and prediction of contact and friction between given materials is crucial.
  • Developing the ability to simulate contact problems using FEM methods with significant application potential
Supervisor: prof. Ing. Martin Hartl, Ph.D.
Co-supervisor: Ing. Petr Šperka, Ph.D.

Plastic gears lubrication with eco-lubricants
Mazání plastových ozubených převodů pomocí ekomaziv

Aim of thesis: The aim of this paper is to elucidate the formation of the lubricating film in gear contacts by means of experiments at different scales from model contacts to the meshing of real gears. Current developments focus, for example, on plastic gears with coatings lubricated by water-based or water miscible lubricants. New insights and technologies have the potential to contribute and shape a new generation of gearboxes for lower to medium performance with eco-friendly lubricants, efficient production and operation.
  • Collaboration with national and foreign research institutes in solving a research project
Supervisor: prof. Ing. Ivan Křupka, Ph.D.
Co-supervisor: Ing. Petr Šperka, Ph.D.

Development of shaft assemply with low losses
Vývoj uložení hřídele s nízkými ztrátami

Aim of thesis: The aim of this work is to develop a low friction shaft assembly demonstrator employing principles of superlubricity. The requirement is to achieve low friction over a wide range of speeds. The work builds on previous research. The work combines experimental research and development at the contact level and laboratory testing on component level. The findings will contribute to the development of a new generation of technical solutions that have the potential to be used in industry in the coming decades.
  • Cooperation and internships at foreign partners; work on a prestigious project
Supervisor: prof. Ing. Ivan Křupka, Ph.D.
Co-supervisor: Ing. Petr Šperka, Ph.D.

Digital twin of wheel-rail contact
Digitální dvojče rozhraní kolo-kolejnice

Aim of thesis: The aim of the work is to use experimental methods to develop a model that will describe the frictional behavior of the wheel-rail contact in the presence of lubricants. The model will use real-track data to predict contact friction, allowing the lubrication system to recognize when re-application of lubricant is necessary. The result of the work will have an effect on a more efficient process of lubrication of the contact between the wheel and the rail. Lubricant consumption will be optimized while the wear of contact bodies is reduced.
  • Cooperation on a project, which will use the developed model for the control of contact lubrication on a real railway line.
Supervisor: prof. Ing. Martin Hartl, Ph.D.
Co-supervisor: Ing. Daniel Kvarda Ph.D.

The use of machine learning in the processing of railway vehicle vibrodiagnostic data
Využití strojového učení při zpracování dat vibrodiagnostiky železničních vozidel

Aim of thesis: Predictive identification of faults and wear is a key aspect of the safe and efficient operation of railway vehicles. Machine learning methods can be used to train a model from data and generalize it to currently unmeasured data. The goal of the thesis is to train a model using machine learning on data obtained from the chassis of a railway vehicle. The resulting model will then be used for predictive maintenance of the railway bogie.
  • Cooperation on the solution of a project, which will use the developed model for diagnostics of the bogie on a railway vehicle.
Supervisor: prof. Ing. Martin Hartl, Ph.D.
Co-supervisor: Ing. Daniel Kvarda Ph.D.