The paper deals with testing and evaluation of a modified Self-Organizing Migrating Algorithm (SOMA) applied to a discrete event simulation model reflecting the supply of production lines using automated guided vehicles. The SOMA heuristic optimization method is derived from the Differential ...

Over the last twenty years, the Research and Testing Institute in Pilsen has been developing a methodology of computational and experimental investigation of strength and fatigue life of bodies of road vehicles for mass passenger transport. The methodology includes multibody dynamic simulati...

Four creep resistant Fe-based oxide dispersion strengthened (ODS) alloys with a significantly high amount of dispersed oxide nanoprecipitates have been investigated. One Fe-Al-O and three Fe-Al-Cr-Mo-Y2O3 systems with different chemical composition strengthened by yttrium nano-oxides have been prepared by&...

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.&...

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 ...

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&#...

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...

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...

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...

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 ...

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...

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...

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...

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...

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 ...

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...

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...

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 ...