Disertační práce / Dissertations (KMM) Collection home page

Browse
Subscribe to this collection to receive daily e-mail notification of new additions RSS Feed RSS Feed RSS Feed
Collection's Items (Sorted by Submit Date in Descending order): 1 to 20 of 39
Bublíková, Dagmar
Vývoj nových materiálových konceptů pro automobilový průmysl

Advanced high-strength low-alloy steels are currently an important component for the automotive industry. Especially in the automotive industry, in the production of building and safety components, the emphasis is placed on the combination of high strength and ductility and decrease the weig...

Špirit, Zbyněk
Inovativní metoda úpravy povrchu ušlechtilých ocelí metodou Laser Shock Peening

The topic of the dissertation is "Innovative method of surface treatment of stainless steels by Laser Shock Peening (LSP)". The dissertation is aimed at describing the influence of LSP on the useful properties of tested steels used in the energy sector of the Czech R...

Muzika, Lukáš
Infračervené nedestruktivní testování povlaků

This thesis dealt with infrared nondestructive testing (IRNDT) of coating thickness. Thesis goals were a verification of IRNDT applicability for a coating thickness testing, a new evaluation algorithm design and a new excitation design. The evaluation algorithm and the excitation should impr...

Kepka, Miloslav
Degradace mechanických vlastností cyklicky zatěžovaných materiálů a konstrukčních uzlů

The dissertation is focused on the development of applications of the probabilistic approach in the fatigue life analysis of structures loaded by high cycle fatigue. The assessment takes into account the random nature of the service load and the variance of fatigue properties of&#x...

Palán, Jan
Vývoj SPD technologií pro výrobu ultra až nano - jemnozrnných materiálů

The dissertation thesis deals with the development of the SPD process enabling the continuous production of high-strength titanium wires with an ultrafine to nano grained structure. Such wires are intended for the production of dental implants. The developed process consists of Conform ...

Glanc, Aleš
Studium žárově stříkaných povlaků pro otěruvzdorné aplikace

The application of thermal spray coatings benefits from excellent useful properties of coating materials and the low cost and easy fabrication of the base materials. This approach reduces the total costs and because of it is highly desirable in today's industry. One of the ...

Káňa, Josef
Nekonvenční metody termomechanického zpracování materiálů

Within this dissertation, the advantage of the combination of press hardening and QP technologies on three newly designed steels was confirmed. A suitable combination of QP processing parameters was found, thanks to which they achieve significantly better mechanical properties compared to&#...

Ibrahim, Khodr
A study of high strength steel mechanical behaviour during cold roll forming

The aim of the work is to investigate the mechanical behaviour of high strength steel during cold roll forming as the forming parameters are changed and to compare the experimental work with the FEA simulation results and acquire a relation of the deviation between the si...

Nacházel, Jan
Vliv parametrů tváření rotačním kováním a podmínek umělého stárnutí na mechanické vlastnosti a strukturu vytvrditelné hliníkové slitiny řady 2024

This work concerns mechanical properties in relation to microstructural changes in hardenable EN AW-2024 aluminium alloy in wrought and heat treated condition. The treated material benefits from synergistic effects of three hardening mechanisms: grain boundary strengthening, work hardening and precipi...

Varillas delgado, Javier
Studie plasticity nanokontantů a dislokačních lavin v FCC a BCC krystalech pomocí molekulární dynamiky

This study aims to investigate the underlying mechanisms which govern the development of dense defect networks in nanoscale crystal plasticity, either under contact and uniaxial loading conditions, with emphasis on the onset of intermittent avalanche phenomena. The investigation is based on ...

Vorel, Ivan
Vývoj nových materiálových konceptů pro automobilový průmysl

The theoretical part of thesis deals with modern concepts of steel processing in the automotive industry. The aim of the experimental part of thesis is to investigate the effect of austempering on the structure and mechanical properties development of medium-carbon low-alloy steels with...

Procházka, Radek
Vyhodnocování mechanických vlastností konstrukčních materiálů pomocí miniaturních zkušebních vzorků

The dissertation thesis deals with the development of advanced techniques in low and high cycle fatigue testing using miniature test specimens, which are intended to evaluate the degree of material degradation of large in service components. For these purposes, the results of a wid...

Bricín, David
Vlastnosti slinutých karbidů

The main topic of this dissertation thesis was the solution to the problem of the processing of carbide powder mixtures by technologies of additive production of SLM. As part of this work, the applicability of three different WC-Co powder mixtures for this additive technology ...

Klufová, Pavla
Odolnost proti degradaci laserem navařených austenitických vrstev

The dissertation is focused on analysis of degradation corrosion processes of Inconel 625 laser clads with increased molybdenum content. The introductory of the theoretical part is devoted to laser cladding technology process with additive powder material. The research describes basic principles ...

Šimeček, Jiří
Stav povrchů vrtaných nekonvenčními nástroji opatřenými progresivními PVD vrstvami

The thesis is aimed on the evaluation of surface integrity in holes created by unconventional drilling tools. They are capable of forming a precis hole and, moreover, are capable to strengthen the upper layers. The aim should be to develop a certain standard procedure for ...

Khan, Wilayat
Teoretický výzkum spektroskopických, elektronických a magneticýych vlastností nových nískodimensionálnch sysémů

The important aspects of photocatalytic materials like Nb3O7(OH) and Fe2O3 were investigated in this thesis, like the electronic structure, band gap, optoelectronic and spectroscopic properties. The effects of the doping elements in these materials were also investigated. These properties were ca...

Vančura, Filip
Vývoj nových technologií pro semi solid state

With the help of innovative technological procedures, even conventional and well-tried materials can acquire atypical structures with specific mechanical and physical properties. One such dynamically developing area is the field of various semi-solid forming technologies. However, due to its technolog...

Khan, Saleem Ayaz
Interralationship between structural, optical and transport properties of renewable energy materials

Two technologically important aspects of FePt magnetism were investigated in the thesis, namely, the magnetocrystalline anisotropy and the influence of the disorder. For this purpose we used ab initio quantum mechanical calculations. The calculated magnetocrystalline anisotropy energy significantly differs...

Chvostová, Eva
Aplikace miniaturizovaných zkušebních těles při hodnocení mechanických vlastností a odolnosti proti křehkému lomu

The presented thesis deals with further development of small sized specimens techniques for mechanical properties assessment. These tests are being applied for cases when there is shortage of the experimental materials (new materials development, severe plastic deformation processes, residual service&...

Azam, Sikander
Zásadní studie optických, termoelektrických a elektronických vlastností komplexníxh materiálů

Advancement in optical telecommunications and optical computing devices has increased the demand for materials with greater optical coefficients. For that reason, several materials with suitable optical properties have been designed, some of which are based on the family of quaternary chalcogenid...

Collection's Items (Sorted by Submit Date in Descending order): 1 to 20 of 39