Diplomové práce / Theses (KMM) Collection home page

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Collection's Items (Sorted by Submit Date in Descending order): 1 to 20 of 73
Melzer, Daniel
Lokální mechanické vlastnosti kovových materiálů vyrobených aditivními technologiemi.

This thesis deals with evaluation of local mechanical behaviour of additively processed metallic materials by SLM and SEBM processes. Main goal is to perform mechanical tests with using of miniaturized specimens, to assess local properties. Mechanical tests are supported by fractography and&...

Vrtáček, Jiří
Vývoj technologie zpracování vysokopevných ocelí.

This thesis dissert on development of the third generation high-strength steels processing technology with two experimental materials with different aluminium content, their description of mechanical properties and microstructures, design of a tool for high-strength steels treatment and processed materials...

Němec, Josef
Příprava a charakterizace naprašovaných ZnO vrstev pro flexibilní piezogenerátor.

This thesis aims to optimize the deposition of the piezoelectric ZnO layer for use in a flexible piezo devices. There is introduction to technologies that acquire free energy from the environment and transform it into electrical energy in the introduction of this thesis. The n...

Papež, Petr
Vliv Laser Shock Peening (LSP) na mechanické vlastnosti oceli.

The work is focused on laser shock peening technology. In the first part of the thesis are described principles, influences on material, usability and economic evaluation of technology. Methods for measuring residual stresses are also described. In the experimental part, the effects of&...

Kopál, Viliam
Využití nové nedestruktivní techniky zkoušení svarových spojů kolektoru parogenerátoru VVER 1000.

The diploma thesis contains the procedure of non-destructive ultrasonic evaluation of the steam generator collector welds using the phased array technique, theoretical and practical evidence of applicability and meeting of conditions given by the nuclear power plant operator. Evidence of the ...

Melzer, Marek
Vliv cyklického zatěžování při vysokých teplotách na žáropevné vlastnosti a mikrostrukturu oceli COST F.

This thesis deals with influence of mechanical loading on microstructural changes of heat resistant high chrome steel COST F. Tests of LFC and LFC+creep at temperature 600 °C were performed. Development of chromium carbides and precipitation of Laves phase were investigated. Using quant...

Formanová, Ludmila
Vliv kryogenního zpracování na vlastnosti kovových materiálů

Aim of this master's thesis is to create higher dispersion of formed nitrides by use of cryogenic treatment in nitriding process. This should lead to better wear resistance, corrosion resistance a better toughness and hardness of nitriding layer. Use of cryogenic heat treatment ...

Jansa, Zdeněk
Vliv tepelného působení na mikrostrukturu a vlastnosti zirkoniových slitin

This thesis consist describing of zirkonium and their alloys. Also deals with the question of phase transformation with low and high-temperature exposure.especially in relation to the accident of nuclear reactors called LOCA (Loos-of-coolant-accident). Experimental program is focused on the evaluation...

Brotánek, Jan
Vliv dlouhodobého tepelného zpracování na oduhličení a mechanické vlastnosti oceli

This thesis deals with the decarburization of the poured tests of castings which are subsequently used for test samples for the mechanical properties and which are provided to custumer with required část. In the theoretical part of this thesis is given all necessary backround ...

Kotous, Jakub
Pokročilé metody tepelného zpracování pružinových ocelí

The main objective is to compare microstructures and properties of spring steel 54SiCr6 after two different types of spheroidising treatment. In the introduction, type of springs steel are characterized and descriptions are given of their heat treatment. Effects of heat treatment on the...

Černý, Jan
Optimalizace vysokorychlostního záznamu pro použití u svařovacích procesů

The master's thesis focuses on the use of high speed cameras in the field of welding. The aim is to obtain a high speed record of the welding process from the orbital welding of stainless steel tubes by the TIG method. An analysis of this welding...

Bergmanová, Petra
Hodnocení kritické velikosti vměstků ve vysokopevných ocelích z hlediska iniciace únavových trhlin.

The aim of the DP is to develop a procedure for the evaluation of the micro-cleanness of steels with increased fatigue strength achieved by reducing the number of inclusions by the method: Based on the measured values of the non-metal inclusions sizes by means of the ...

Kožehuba, Ján
Robotizace svařovacích technologií.

This diploma thesis deals with the robotization of welding processes by determining the appropriate technological process for the welding of 2 mm thick stainless steel austenitic steels used for the production of pressure tanks. The theoretical part focuses on suitable welding technology...

Burda, Vít
Přínos tenké vrstvy pro zvýšení korozní odolnosti tepelných upínačů

This diploma thesis is focused on evaluation of the contribution of thin film to increase corrosion resistance of shrink fit chucks. The samples with thin film are compared to conventional shrink fit chucks with mass finishing surface and shot peened surface samples. Diploma thesis...

Samek, Petr
Korozní odolnost heterogenních svarů na jaderných elektrárnách

This diploma thesis deals with the lifetime of dissimilar welded joints in the conditions of the secondary circuit of VVER. The theoretical part describes the problems associated with corrosion resistance of dissimilar welded joints and degradation processes, which significantly affect their ...

Jícha, Jan
Zhodnocení tepelného vlivu laseru na mikrostrukturu a vlastnosti HVOF žárových nástřiků

The presented diploma thesis is focused on application of the laser surface remelting technology onto of HVOF sprayed hardmetal-based coating. The Cr3C2-25%CoNiCrAlY thermal sprayed coating was melted by a high powerdiode laser. The microstructure of the heat-affected coating was examined by ...

Kotrba, Matěj
Využití 3d tisku k výrobě vzorků z prášků slinutých karbidů

This thesis focuses on 3D printing of sintered carbides by SLM technology - Sintering Laser Melting and builds on experiments from abroad. The purpose of this thesis was to make sintered carbide using SLM technology and to perform porosity and corrosion resistance testing. Next,&#x...

Monhart, Petr
Využití UDDG jako plniva pro kompozitní kovové povlaky

The aim of this diploma thesis is to verify under laboratory conditions that the application of UDDG as a filler in a metallic nickel matrix coating made by galvanic plating can increase the abrasion resistance of this composite coating compared to the nickel coating itself.

Váca, Tomáš
Porovnání NDT odezvy od různých typů umělých i provozních vad

The focus of this work is to state the basics of the individual NDT methods used, their possibilities of use, advantages and disadvantages. It also contains a comparison of these methods and refers to calibration and test samples. The experimental part consists of testing vari...

Rádl, Karel
Tribologické vlastnosti nanokompozitních organicko-anorganických povlaků

The diploma thesis deals with the preparation and evaluation of organic-inorganic coatings and films with different types of fillers, which could be used in the field of packaging tech-nology. The main objective is to select the most suitable al-ternative from a selection of select...

Collection's Items (Sorted by Submit Date in Descending order): 1 to 20 of 73