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Collection's Items (Sorted by Submit Date in Descending order): 1 to 20 of 33
Yanovych, Vitalii , Duda, Daniel , Uruba, Václav
Dimensional analysis parameters of turbulence in the wake of a square cylinder

In this article, we show the results of a study of the structure of a turbulent flow behind a square cylinder. Namely, for the series of points that have the highest standard deviation value. During the experiment, we were changing the position of the square cylinder ...

Bricín, David , Ackermann, Michal , Jansa, Zdeněk , Kubátová, Dana , Kříž, Antonín , Špirit, Zbyněk , Štafka, Jiří
Development of the structure of cemented carbides during their processing by SLM and HIP

The study focuses on microstructural evolution in a WC-Co powder mixture during Selective Laser Melting (SLM) and hot isostatic pressing (HIP) processing. This powder mixture contained a 13 plus/minus 0.6 % weight fraction of Co binder and WC particles of mean size of 3.0 ...

Bricín, David , Votava, Filip , Kubátová, Dana , Kříž, Antonín
Influence of the quality of models made by additive technologies on the quality of castings cast by investment casting

The article deals with the use of additive technologies (AM) to produce a fusible model for a casting. AM technologies SLA, FDM, or PolyJet have been used to create models of castings of musical instrument keys from various polymeric materials. The roughness profiles of the&#x...

Syrovátka, Šimon , Martan, Jiří
Hydrophobic and antibacterial properties of laser micromachined steel surfaces

One of the main benefits of ultrashort laser micromachining is the possibility of preparing various surface structures, including a diversity of shapes and dimensions. The goal of this paper was to fabricate hydrophobic surface structures and to study coherency between the wettability a...

Skřivanová, Nikola , Melichar, Martin
Validation of process stability in the aviation industry

The article deals with the validation of the stability of the process of inspecting aircraft components in the aviation industry. During the experiment, the X-ray and CT control system SCIOX Cabinet was used, which allows nondestructive testing in the form of CT models. The ex...

Farský, Jindřich , Daňa, Milan , Zetková, Ivana
Optimizing the design of a holder in metal additive manufacturing

Additive technologies have given us a new approach to designing because we can create very complex shapes that cannot be achieved with conventional machining methods. Also, using additive technologies provides us with the possibility of weight reduction while maintaining the rigidity of ...

Bícová, Kateřina , Kroft, Luboš , Milsimerová, Aneta
A contribution to the capability of the measuring device used in the automotive

The automotive sector places high demands on the quality of products and services. The paper focuses on evaluating of the measuring equipment capability, which is used to verify the accuracy of parts for the automotive industry. It is mainly about verifying the suitability and ...

Kaufnerová, Aneta
Stability measurement – Comparison of measured values with the regenerative theory of self-excitation oscillations

This paper deals with self-excited oscillations arising during the turning process. Several theories are known which attempt to explain the cause of self-excited oscillations. One of the most advanced theories is the reproduction of previous surface waviness. A simplified mathematical description...

Kroft, Luboš , Bícová, Kateřina , Milsimerová, Aneta
Use of 3D printing technology in teaching the basics of milling technology

This paper deals with current possibilities of the utilization of the 3D printing technologies in the area of schooling and education. The main idea is to use current rapid development of the technique and technology of creating 3D models to improve better interaction with stu...

Zatloukal, Tomáš , Řehoř, Jan , Fulemová, Jaroslava , Povolný, Michal
Optimization of the machining process of NiCrBSi thermal spraying

Nowadays, the requirements for the properties of machine parts are increasing. With this trend, the application of thermal spraying is also growing. The main reason for the use of thermal spraying in industry is to increase the resistance to mechanical wear, corrosion and oxidation...

Melichar, Martin , Skřivanová, Nikola
Foreign object damage issued by industry 4.0

In the field of aerospace inspection, the prevention of damage caused by foreign objects is a very serious topic, as in the past the FOD has caused a number of accidents. The FOD itself can be divided into many types but this article deals with foreign objects t...

Kubátová, Dana
Problems of defining and subsequently measuring surface roughness in aperiodic surfaces

The concept of surface roughness plays an irreplaceable role in technical practice. It has been evaluated by various techniques and various mathematical procedures since the 1920s. However, the evaluation is often underestimated and reduced to finding the parameters Ra or Rz. This is&#x...

Farský, Jindřich , Bakša, Tomáš , Zetek, Miroslav
Grinding maraging steel VACO 180 with SIC grinding wheels - grinding force and wheel wear

Grinding is a technology which is used as a surface finishing operation. Therefore it is important for achieving good dimensions of accuracy. This accuracy can be affected by the size of wear of the grinding wheel. The size of the grinding wheel wear can be affected ...

Zatloukal, Tomáš , Gombár, Miroslav , Fulemová, Jaroslava , Řehoř, Jan , Povolný, Michal
Optimization of the thermal spraying process depending on the surface roughnes

Nowadays, the requirements for the properties of machine parts are increasing. With this trend, the application of thermal spray coatings is also increasing in practice, with the aim of increasing resistance towards mechanical wear, corrosion, and oxidation, even at elevated temperatures. Re...

Šambergerová, Štěpánka , Bícová, Kateřina
Analysis of time fluctuation on selected workplace in terms of automotive industry

This paper focuses on time analysis and optimization of selected process, which is subject to IATF 16949 standard for automotive industry. Each company has its own production system, according to which it tries to optimize production and thus meet the requirements of ISO 9000 ...

Skřivanová, Nikola , Melichar, Martin
Comparing the time-consumption of destructive and non-destructive forms of measurement in the automotive industry

The article presents a comparison of the time-consumption of destructive and non-destructive forms of measurement in the automotive industry. X-ray, CT control system Y. Cougar SMT which allow non-destructive measurement, and CMM-Vertex 311 UM, in which the measured dimensions are not always...

Melichar, Martin , Kubátová, Dana
Reverse application of MSA tool for CMM stylus evaluation

In today's robust quality management systems, final inspection is a critical process that often determines the success of the entire production. For this reason, the most accurate measuring instruments available to the manufacturer are used in the final inspection and the measurements&#x...

Kroft, Luboš , Hnátík, Jan , Bícová, Kateřina
Influence of tool diameter on quality of completed radio area

The aim of this paper is to introduce one of the directions of research focused on finishing milling in CAD / CAM systems. This research is focused on this area since current finishing operations do not include any of the modern methods of tool path generation, ...

Dudáčková, Simona , Bícová, Kateřina
Verification of process and machine capability for precision automotive production

Currently, high demands are placed on the quality of products and services. This paper focuses on the evaluation of the capability of the production process and then the capability of the machine itself in order to verify the suitability of use for the precise production ...

Kubátová, Dana , Melichar, Martin
Rougness evaluation using Abott-Firestone curve parameters

Article deals with a highly current topic of evaluation of critical surface integrity parameters. The surface integrity to be the relationship between the required functional properties of the surface and the change in the properties of the new surface. Surface can be evaluated usi...

Collection's Items (Sorted by Submit Date in Descending order): 1 to 20 of 33