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Ústav konstruování - závěrečné práce
DISSERTATION TOPICS

    DISSERTATION TOPICS

    Results

    Contamination of optical elements by lubricant condensation in satellite systems
    Kontaminace optických prvků kondenzací maziva v satelitních systémech

    Aim of thesis: Comprehensively analyze the mechanisms of contamination of optical elements in satellite systems caused by lubricant condensation and propose measures to reduce their negative impact on optical performance and long-term system reliability. Sub-objectives: Study the processes of contaminant transport (gas phase, redeposition) within satellite structures and their interaction with optical surfaces. Experimentally verify the effect of condensed lubricants on optical properties (transmissivity, reflectivity, scattering, degradation of surface layers). Develop or adapt experimental methodology for simulating contamination phenomena under laboratory conditions (vacuum, temperature cycles, UV radiation). Quantify the temporal degradation of optical performance depending on the type of lubricant, optical element material, and operating conditions. Compare different types of protective coatings and surface treatments of optical elements in terms of their resistance to contamination.
    • Connection to the ESA project dealing with labyrinth seals. Cooperation with the BrnoSAT satellite development project and participation in its operation. Opportunities for internships and participation in ESA conferences.
    Supervisor: prof. Ing. Martin Hartl, Ph.D.
     Co-supervisor: Ing. David Košťál, Ph.D.

    4D printing of magnetically active elastomers
    4D tisk magneticky aktivních elastomerů

    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.

    Electric motors for the aerospace industry
    Elektromotory pro aerospace

    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.

    Smart suspension system for military vehicles
    Smart systém odpružení pro armádní vozidla

    Aim of thesis: The aim of the doctoral dissertation is to develop an electronically controlled suspension system using magnetorheological technology for military vehicles. The work will include the design of a control system and experimental validation on a vehicle under real operating conditions. The research focuses on improving off-road mobility, enhancing driving stability, and stabilizing the vehicle during firing.
    • Collaboration with the manufacturer of the military vehicle, including the opportunity to validate the proposed system directly on the vehicle through testing under real operating conditions.
     Supervisor: doc. Ing. Michal Kubík, Ph.D.
     Co-supervisor: Ing. Filip Jeniš, 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.

    Advanced bearing diagnostics for energy industry
    Pokročilá diagnostika ložisek pro energetiku

    Aim of thesis: The current trend is towards efficient electricity generation. Efforts to maximize generator and turbine efficiency place high demands on design, while at the same time requiring high reliability of all structural components. Critical components include, in particular, drive train bearings. Due to time-varying loads, it is difficult to reliably determine their service life, and at the same time, it is necessary to prevent their failure during operation, as this can damage the entire turbine and cause significant damage. The aim of this work is to develop an advanced predictive diagnostic method for monitoring the technical condition of rotating machine 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.

    Heat exchangers with controlled non-uniformity of refrigerant distribution
    Tepelné výměníky s řízenou nerovnoměrností distribuce chladiva

    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 with the EU and UPI on basic and applied research projects
     Supervisor: doc. Ing. Daniel Koutný, Ph.D.
     Co-supervisor: Ing. Ondřej Vaverka, Ph.D.

    Online monitoring of LPBF process
    Online monitorování LPBF procesu

    Aim of thesis: The aim of this work is to clarify the relationship between the laser powder bed fusion (LPBF) process setup (scanning strategy, speed, power...), defects and specific microstructure in the processed material by means of continuous observation of the process.
    • Internship at the Technical University of Munich
     Supervisor: doc. Ing. Daniel Koutný, Ph.D.
     Co-supervisor: Ing. Aneta Zatočilová, Ph.D.

    Superlubricity of gels in point contacts
    Superlubricita gelů v bodových kontaktech

    Aim of thesis: The aim is to describe the formation of the lubricating film and friction across lubrication regimes of point contacts using aqueous and other gels. The work focuses on a new generation of lubricants.
    • Collaboration on a project with patent potential
     Supervisor: prof. Ing. Ivan Křupka, Ph.D.
     Co-supervisor: Ing. Petr Šperka, Ph.D.

    Development of a compact optical tribometer
    Vývoj kompaktního optického tribometru

    Aim of thesis: The goal is to develop a compact optical tribometer enabling the study of friction, lubrication, and wear in a ball-on-disk configuration, which could be commercially available.
    • Collaboration on a project with commercial potential
     Supervisor: prof. Ing. Ivan Křupka, Ph.D.
     Co-supervisor: Ing. Petr Šperka, Ph.D.

    Research and development of high-speed rolling bearings for extreme operating conditions
    Výzkum a vývoj vysokootáčkových valivých ložisek pro extrémní provozní podmínky

    Aim of thesis: The objective of the dissertation is to develop an experimental platform and conduct original research on high-speed rolling bearings operating at extreme rotational speeds and under non-standard lubrication regimes. The work will focus on the physical mechanisms of lubrication at very high rotational frequencies, including fuel-lubricated operation and minimum lubrication conditions, and their influence on bearing temperature, dynamic stability, and service life. The expected outcomes include new design and tribological principles applicable to the propulsion units of unmanned aerial vehicles and other extreme-performance applications.
    • Practical high-tech topic with high application potential
     Supervisor: doc. Ing. Milan Omasta, Ph.D.
     Co-supervisor: Ing. Martin Valena, Ph.D.

    Functionally and technologically aware strategies for large-format additive manufacturing
    Funkčně a technologicky uvědomělé strategie velkoformátové aditivní výroby

    Aim of thesis: To clarify the failure mechanisms of large-scale layer-by-layer additive manufacturing, in order to prevent their occurrence or eliminate their impact on the function of the manufactured part. To propose strategies and methodology in the sense of FAT (factory acceptance test) that will serve to validate new materials for LFAM, or additive subtractive manufacturing.
    • Collaboration with industry, applied project.
     Supervisor: doc. Ing. Daniel Koutný, Ph.D.
     Co-supervisor: Ing. David Škaroupka, Ph.D.