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Collection's Items (Sorted by Submit Date in Descending order): 1 to 20 of 58
Maňák, Martin
Voronoi-Based Detection of Pockets in Proteins Defined by Large and Small Probes

Students often ask what theoretical subjects will teach them for their future careers. It is advisable to show real problems during their courses which are solved by experts in practice or doctoral students. One such problem is the sharpening of a hobbing worm milling cutter.&...

Hajšman, Jan , Jeníček, Štěpán
Microscopy of polymer composites

This work aims to optimize the methods of light and electron microscopy for documentation of polymer composite samples. The main task was to adapt the well-known techniques of metallography (i.e. sample preparation and microscopic examination) to multi-component polymer materials. There were ...

Bureš, Marek , Machová, Andrea , Altupinar, Ali
Effect of Shift Work on Health and Performance of the Workers – Comparison Between Turkey and the Czech Republic

The aim of this study was to map out how shift work is perceived by workers in two shift regimes and two national groups. The research was carried out by means of a questionnaire survey of the Czech manufacturing workers and the Turkish airport ground personal. The&#...

Bureš, Marek , Čadková, Věra
Strenght and Motor Function in an Aging Population in Dependence to Work Position

The paper aims at clarification if a job type has an influence on three physical properties of humans. Those are dexterity of fingers and hands, grip strength and range of motions. A group of 67 manual and 99 office workers both males and females in different age...

Reiterer, Florian , Zhou, Jinwei , Kovanda, Jan , Rulc, Vojtěch , Kemka, Vladislav , del Re, Luigi
Beyond-Design-Basis Evaluation of Advanced Driver Assistance Systems

Simulation studies are nowadays an invaluable tool for the design, as well as for the safety evaluation and veri_cation of Advanced Driver Assistance Systems (ADAS) or Automated Driving Functions (ADF). In case ADAS/ADF are developed using simulation studies, they are (usually) designed...

Rubanenko, Olena , Yanovych, Vitalii , Rubanenko, Olexander
Influence of vibration of contacts on further operation of high-voltage switches

Opatová, Kateřina , Kučerová, Ludmila , Zetková, Ivana
Methodology for observation of maraging tool steel after 3D printing using FIB and STEM mode

The components of the maraging tool steel produced by 3D printing are further heattreated after printing. It is a stress relief annealing and precipitation hardening since it is martensitic precipitation-hardenable steel. During this process, in the steel microstructure, precipitates of Ni3Ti...

Tittel, Jan , Kepka, Miloslav , Heller, Petr
Static and dynamic testing of a bogie

The development process of railway bogie frames consists of three stages. The first stage involves stress calculations, the second stage comprises static and fatigue tests and the third one is focused on validating fatigue life data by stress monitoring during test runs on an ...

Khalaj, Omid , Siabil, Seyed Mohammad Amin Ghotbi , Tafreshi, Seyed Naser Moghaddas , Kepka, Miloslav , Kavalír, Tomáš , Křížek, Michal , Jeníček, Štěpán
The experimental investigation of behaviour of expanded polystyrene (EPS)

Low-strength substrates and anthropogenic soils are always an issue in civil engineering. Based on the soil layer types, several methods could be used to improve the basic/foundation layer however it would be difficult to make sure if the specified requirements are achieved. Nowada...

Vrtáček, Jiří , Jirková, Hana , Peković, Michal , Tříska, Ladislav
Rolling of ingots of third-generation high-strength steels into sheets

One of the essential branches of today’s engineering production involves production of sheet stock by rolling. The majority of steel sheet stock is used in the automotive industry. In recent decades, this sector has been striving to reduce vehicle emissions. One of available soluti...

Rubešová, Kateřina , Peković, Michal , Jirková, Hana , Bystrianský, Martin
Effects of deformation on the behaviour of chromium carbides in tool steel studied by use of semi-solid forming

Induction hardening technology is mainly used for processing parts where high hardness, although conventional treatment of tool steels is ordinarily used in industrial practice, engineers continue to seek new procedures to rid tool steels of objectionable primary sharp-edged chromium carbides, wh...

Průcha, Vojtěch , Benešová, Soňa , Veselý, Vilém , Kesl, Miloslav
The influence of hot forging on the size and frequency of carbides in HS 6-5-2

This paper follows on from a paper entitled “Effects of hot forging on the shape and size of prior austenite grain in HS 6-5-2 high-speed steel” which was devoted to a microstructure analysis of slugs from rolled bars of a high-speed steel after two and three forging...

Peković, Michal , Vrtáček, Jiří , Janda, Tomáš , Volkmannová, Julie
Induction hardening of steels with use of the device for incremental forming of round bars HDQT-R 30-12

Induction hardening technology is mainly used for processing parts where high hardness, as well as wear-resistance and ductile core, is required. Normally induction hardening is used for spur gears, wind turbine rings, and bearings. Innovative induction hardening processes are also developed ...

Ahmed, Zaid , Sathiaraj, Dan , Kumar, Satheesh , Chelvane, Arout , Freudenberger, Jens , Kučerová, Ludmila
Evolution of microstructure and texture in FeCoCr(Al, Mn)0.25 magnetic high entropy alloy during thermomechanical processing and its mechanical properties

Since last decade, HEAs have gained tremendous importance due to its superior mechanical and functional properties when compared to conventional alloys. Among the different functional alloys FCC structured FeCoCr(Al, Mn)0.25 alloy possessing high magnetic saturation, high Curie temperature, low coerci...

Mach, Josef
Stabilization of austenitic stainless steel used in nuclear industry: project introduction

Austenitic stainless steels used for the production of primary circuit components in nuclear engineering must exhibit not only good corrosion resistance but also adequate mechanical properties at elevated temperatures. The main problem with these steels is their susceptibility to intergranular em...

Kučerová, Ludmila , Burdová, Karolína , Stehlík, Adam
Effect of soaking temperature on the microstructure and mechanical properties of heat treated Al-Si-Nb TRIP steel

Two-step heat treatment with bainitic hold at 425 °C was applied to low alloyed high strength steel with partial substitution of silicon by aluminium. The steel was further micro-alloyed by niobium. Various soaking temperatures in the range of 750-1250 °C were used to analyse ...

Jirková, Hana , Opatová, Kateřina , Jeníček, Štěpán , Kučerová, Ludmila
Combination of press-hardening and isothermal holding in the treatment of high-strength steel

Today, high-strength parts for the automotive industry are mainly produced by the press-hardening technology. In order to reduce costs, savings in production and optimal materials are sought. One option involves the use of high strength steels of various chemical compositions. Two high ...

Jeníček, Štepán , Vorel, Ivan , Peković, Michal , Stehlík, Adam , Kroupa, Oldřich
Effect of chromium on bainite transformation and microstructural evolution in austempered unconventional steels 42SiCr and 42SiMn

Enrichment of austenite with carbon in the course of austempering is a fundamental mechanism which leads to incomplete bainite transformation. Higher carbon content in untransformed austenite, together with the presence of silicon, is understood to lead to stabilization of austenite. As a&#x...

Janda, Tomáš , Peković, Michal , Rubešová, Kateřina , Stehlík, Adam
Influence of higher partitioning temperatures on mechanical properties of heat treated high-strength steel alloyed with 1.3 % chromium

This paper deals with the innovative Quenching and partitioning (QP) heat treatment (HT) of low-alloyed chromium steel, and is especially focused on the higher temperatures of partitioning as well as longer holding times and its influence on mechanical properties of the material. As...

Bublíková, Dagmar , Jirková, Hana , Jeníček, Štepán , Vrtáček, Jiří
Influence of chemical composition and parameters of heat treatment on the mechanical properties and microstructure of TRIP steels

Good mechanical properties of steels, in which appropriate heat treatment can produce mixed hardening structures, make them candidates for a broad range of applications, namely in the automotive industry. TRIP steels (in which transformation-induced plasticity operates) with a carbon content of&#...

Collection's Items (Sorted by Submit Date in Descending order): 1 to 20 of 58