Acta Polytechnica. 2025, vol. 65, no.3
Zobrazují se záznamy 1-11 z 11
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Analysis of surface roughness and machining performance of AZ91 magnesium alloy cut by WEDM
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2025)AZ91 magnesium alloys have poor machinability when conventional chip removal processes are used due to their low thermal stability and high susceptibility to softening and oxidation at elevated temperatures, which lead to ... -
Comparison between the Wilhelmy surface tension measurement method and the pendant drop shape analysis method
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2025)Surface tension plays an essential role in various laboratory and industrial processes. The Fluid Metrology Laboratory (Laflu) of the National Institute of Metrology, Quality and Technology (Inmetro) uses the Wilhelmy and ... -
Comparison of cavitation erosion of NiCrBSi and AISI 316L coatings deposited by powder plasma transferred Arc welding
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2025)This study carefully compares the effect of microstructure and hardness on the cavitation wear resistance of PPTA (Powder Plasma Transferred Arc) deposited coatings. Deposits were made on a substrate of S235JR structural ... -
Some remarks on a mathematical model for water flow in porous media with competition between transport and diffusion
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2025)The contribution deals with the mathematical modelling of fluid flow in porous media, in particular water flow in soils, with the aim of describing the competition between transport and diffusion. The analysis is based on ... -
Vortices in the wake past adjustable car spoiler in open and closed configuration studied experimentally by PIV
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2025)A complex adjustable car spoiler opens or closes in dependence on ride properties: the closed state increases negative lift (better for curves), while the open state ensures lower drag (better for straight segments of the ... -
Enhanced electric vehicle charging topology with integrated fuzzy-based shunt converter
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2025)This article presents a novel electric vehicle charging scheme that addresses power quality issues in distribution grids, caused by widespread EV charging. The system uses an interval type-II (IT-II) fuzzy-logic-based shunt ... -
Impact of process parameters on the mechanical and surface properties of AA6082
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2025)This study investigates the effects of chemical composition, heat treatment, and processing parameters on the mechanical properties, microstructure, and surface quality of AA6082 aluminium alloy. Three castings with varying ... -
Determination of mechanical properties of very thin 3D-printed specimens for numerical analysis of tensile strength and fracture toughness
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2025)This research deals with the influence of thickness on the mechanical properties of polyamide (PA12) samples produced by the SLS 3D technology. Experiments included fracture toughness and simple tensile tests on samples ... -
Temporal fusion strategy for violence detection: utilising convolutional and LSTM neural networks for surveillance videos
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2025)In the latest intelligent cities, there is a pursuit for the utmost degree of automation and integration of services. One of the major challenges in the surveillance industry is the need to automate real-time video analysis ... -
Wave propagation in a pipe conveying two phase flow
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2025)The study of wave propagation in pipes conveying a two-phase flow is of significant importance in various engineering applications, including the oil and gas, chemical, and nuclear industries. One of the most significant ... -
Multi-mode secure data communication for real-time robot arm control with Li-Fi technology
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2025)This work explores the secure data transmission approach to control a robotic arm using Li-Fi technology. Although Li-Fi offers built-in security by keeping the light within the walls of the environment, where it is used, ...
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