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Collection's Items (Sorted by Submit Date in Descending order): 1 to 20 of 44
Vychytil, Jan , Špirk, Stanislav
Numerical analysis of passenger kinematics and injury risks during a railway vehicle collision: The effect of safety belts

The aim of this paper is to contribute to investigation of passive safety of passengers in railway vehicles using numerical simulations. At first, a typical interior of a railway vehicle is created in the Virtual Performance Solution software. It includes finite element models of&#...

Kučerová, Ludmila , Zetková, Ivana , Jeníček, Štěpán , Burdová, Karolína
Hybrid parts produced by deposition of 18Ni300 maraging steel viaselective laser melting on forged and heat treated advanced high strength steel

Sika, Jiří , Křížek, Michal
Modelling of noise propagation in enclosures

Heller, Petr , Žlebek, Stanislav , Krsička, Tomáš
Nestandardní úzkorozchodný tramvajový podvozek

Khalaj, Omid , Saebnoori, Ehsan , Chocholatý, Ondřej , Jirková, Hana , Svoboda, Jiří
High Temperature and Corrosion Properties of A Newly Developed Fe-Al-O Based OPH Alloy

Opatová, Kateřina , Zetková, Ivana , Kučerová, Ludmila
Relationship between the size and inner structure of particles of virgin and re-used MS1 maraging steel powder for additive manufacturing

Kepka, Miloslav , Kepka, Miloslav , Džugan, Jan , Konopík, Pavel
Practical notes for assessing the fatigue life of bodyworks of buses and trolleybuses

Habrman, Martin , Ráž, Karel , Kalina, Tomáš
Effect of the Cascade Injection Molding on the Filling Behaviour

This paper deals with different ways of injection molding. A plastic part can be generally filled many ways. Use of more than one gate is common in a plastic industry. Cascade molding can affect the final properties of the product, especially by the number of gates, ...

Hajšman, Jan , Jeníček, Štěpán , Kučerová, Ludmila , Rieger, David
Microstructure and properties of polymer composites

This work aimed to characterise microstructure and mechanical properties of polymer composite samples. The main task was to adapt the well-known techniques of metallography (i.e. sample preparation and microscopic examination) to documentation of multi-component polymer materials and to optimize the&#...

Kalina, Tomáš , Marek, Václav
Development of the new generation of clamping jaws for thermomechanical simulator

This paper presents a development and design of new multifunctional clamping jaws for thermomechanical simulator. In the article there is presented what the thermomechanical simulator is and what is it used for. The article also describes the requirements for the thermomechanical simulator&#...

Jeníček, Štěpán , Vorel, Ivan , Peković, Michal
Treatment of high-strength CFB-QP forged parts by stepwise water quenching

The forging industry, and the production of high-strength forged parts in particular, saw no substantial progress in recent decades. High-strength parts continued to be made of well-tried steel grades which meet the economic and environmental production requirements, using mainly the conventional...

Bakša, Tomáš , Farský, Jindřich , Hronek, Ondřej , Zetek, Miroslav
Surface Quality after Grinding VACO 180 Tool Steel using Different Cutting Conditions

This paper is focused on research in the field of grinding VACO 180 tool steel. Different grinding conditions in terms of several cutting speeds and depths of cut were used for grinding tool steel with CBN grinding wheels. Two CBN grinding wheels with different grain size...

Hanzl, Pavel , Zetek, Miroslav , Rulc, Vojtěch , Purš, Hynek , Zetková, Ivana
Finite Element Analysis of a Lightweight Milling Cutter for Metal Additive Manufacturing

Previous work has proposed a process for implementing a lattice structure into a milling cutter body based on clustering in the milling cutter with modified main dimensions of a BCC cubic lattice structure cell. A finite element analysis model has been created to predict the&#...

Bunda, Zbyněk , Kučerová, Ludmila , Kepka, Miloslav
The Crack Analysis of Fatigue Tested Steel Construction

Laboratory fatigue testing is an important part of the fatigue design of machine components that are supposed to work under cyclic loading. These tests are used to confirm whether the tested component matches the required fatigue life and they also serve as a verification of&#...

Janda, Tomáš , Jirková, Hana , Jeníček, Štěpán , Kučerová, Ludmila
Influence of cooling rate on microstructure and mechanical properties of 42SiCr steel after Q&P process

Using innovative methods of heat treatment (HT) for high-strength steels, such as the Q&P process, very favoura-ble ratios of ductility and strength can be achieved. Materials processed by this technology have higher content of retained austenite, and therefore better ductility. This exp...

Peković, Michal , Opatová, Kateřina , Rubešová, Kateřina , Janda, Tomáš , Jirková, Hana , Bureš, Radovan
Observation of phase transformations in high-temperature chamber under microscope objective lens

Today, extensive information on a particular material can be obtained from its chemical composition using vari-ous computer programs. Such information includes phase transformation temperatures, such as Ac1 and Ac3 or the Ms and Mf, as well as the entire austenite decomposition sequence,...

Jirková, Hana , Zetková, Ivana , Cajthamlová, Šárka , Opatová, Kateřina , Rubešová, Kateřina , Kučerová, Ludmila
Vliv směru tisku při pěchování vzorků vyrobených 3D tiskem z maragingové oceli MS1

Additive technologies make it possible to produce complicated parts from various materials, which leads to their rapid expansion into various areas of industry. The properties of the parts produced by 3D printing are very influenced not only by the laser setting parameters, the thi...

Tungga Dewa, Rando , Kepka, Miloslav , Kepka, Miloslav
Statistical approaches on the design of fatigue stress spectra for bus structures

This paper presents technical procedures and statistical approaches on the extrapolation of fatigue stress spectra for the critical part of the bus structure. The approach for such stress spectra extrapolation can be used for determining long-term stress spectra at expected service life....

Neslušan, Miroslav , Minárik, Peter , Čilliková, Mária , Kolařík, Kamil , Rubešová, Kateřina
Barkhausen noise emission in tool steel X210CR12 after semi-solid processing

This study reports about magnetic Barkhausen noise in tool steel X210Cr12 after semi-solid forging. Semi-solid subsequent forging involves the partial melting of the workpiece followed by quenching. This process remarkably affects the character of the resulting matrix; stress state; volume of...

Kindl, Vladimír , Kavalír, Tomáš , Sika, Jiří , Křížek, Michal
Correction of oblique-angle oscillation for laser doppler vibrometry

The paper proposes a correction method of the oblique-angle vibration for laser doppler vibrometry. It briefly discusses the key mathematical approach considering the surface of the analysed object to be a reference plane and gives a practical example of the method proper application.&#...

Collection's Items (Sorted by Submit Date in Descending order): 1 to 20 of 44