Tomáš Trčka
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Optical Properties of Yttrium Ferrite Films Prepared by Pulse Laser Deposition Open
This study investigates the optical properties of yttrium ferrite thin films fabricated via pulse laser deposition. Yttrium orthoferrite, a ferrimagnetic material known for its potential applications in spintronics and photonics, was depos…
Optical Properties of Yttrium Orthoferrite Films Prepared by Plasma Laser Deposition Open
This study investigates the optical properties of Yttrium Orthoferrite thin films fabricated via plasma laser deposition. Yttrium Orthoferrite, a ferrimagnetic material known for its potential applications in spintronics and photonics, was…
Electron Energy-Loss Spectroscopy Method for Thin-Film Thickness Calculations with a Low Incident Energy Electron Beam Open
In this study, the thickness of a thin film (tc) at a low primary electron energy of less than or equal to 10 keV was calculated using electron energy-loss spectroscopy. This method uses the ratio of the intensity of the transmitted backgr…
Brief Review of PVDF Properties and Applications Potential Open
Currently, there is an ever-growing interest in carbon materials with increased deformation-strength, thermophysical parameters. Due to their unique physical and chemical properties, such materials have a wide range of applications in vari…
Differentiating between artificial and natural sources of electromagnetic radiation at a seismogenic fault Open
Ultralow frequency (ULF) to low frequency (LF) electromagnetic radiation represents one of the most promising effects of brittle rock strain and microcracking that might be potentially helpful for short term earthquake forecasting. In this…
PVDF Fibers Modification by Nitrate Salts Doping Open
The method of inclusion of various additives into a polymer depends highly on the material in question and the desired effect. In the case of this paper, nitride salts were introduced into polyvinylidene fluoride fibers prepared by electro…
View article: ANALYZING THE PERFORMANCE OF CIRCLE SEGMENT END MILL WITH PCD INSERTS WITH LASER-MACHINED INTEGRAL CHIPBREAKER WHEN DRY MILLING OF ADDITIVE MANUFACTURED TI-6AL-4V TITANIUM ALLOY
ANALYZING THE PERFORMANCE OF CIRCLE SEGMENT END MILL WITH PCD INSERTS WITH LASER-MACHINED INTEGRAL CHIPBREAKER WHEN DRY MILLING OF ADDITIVE MANUFACTURED TI-6AL-4V TITANIUM ALLOY Open
Components with generally shaped surfaces requiring higher surface quality and dimensional accuracy are, in most cases, machined. Specifically, milling technology is involved very often, which can be supplemented by finishing operations. B…
Case Study of Polyvinylidene Fluoride Doping by Carbon Nanotubes Open
Modern material science often makes use of polyvinylidene fluoride thin films because of various properties, like a high thermal and chemical stability, or a ferroelectric, pyroelectric and piezoelectric activity. Fibers of this polymer ma…
Characterization of Polyvinylidene Fluoride (PVDF) Electrospun Fibers Doped by Carbon Flakes Open
Polyvinylidene fluoride (PVDF) is a modern polymer material used in a wide variety of ways. Thanks to its excellent resistance to chemical or thermal degradation and low reactivity, it finds use in biology, chemistry, and electronics as we…
View article: New developed software for processing and analysing of the cutting forces records verified when machining by modern circle-segment end mills
New developed software for processing and analysing of the cutting forces records verified when machining by modern circle-segment end mills Open
At present, 5-axis machining is often realized with ball end mills that do not achieve the advantages of the modern circle-segment end mills. In recent studies, these tools have been compared concerning the quality of the machined surfaces…
View article: 5-AXIS DRY MILLING OF BOTTOM OF POCKET BY BALL AND CIRCLE-SEGMENT END MILLS
5-AXIS DRY MILLING OF BOTTOM OF POCKET BY BALL AND CIRCLE-SEGMENT END MILLS Open
At present, 5-axis machining is often realized with ball end mills that do not achieve the advantages of modern circle -segment end mills.However, to exploit the potential of these modern tools, it is necessary to use a special CAM softwar…
Fractal Dimension Analysis of Three-Point Bending Concrete Test Specimens Open
The paper deals with the analysis of the fractal dimension of fracture surfaces of concrete specimens tested in a three-point bending configuration. Fifteen representative specimens were chosen out of a bigger set for the fractal dimension…
View article: END MILLING OF Ti-6Al-4V ALLOY BY PCD INSERTS WITH LASER-MACHINED INTEGRAL CHIPBREAKER
END MILLING OF Ti-6Al-4V ALLOY BY PCD INSERTS WITH LASER-MACHINED INTEGRAL CHIPBREAKER Open
Polycrystalline diamond (PCD) is becoming more available cutting material due to developing technologies, but it is still one of the difficult-to-cut materials.Nowadays, sharpening of diamond inserts is usually performed using unconvention…
View article: END MILLS WITH PCD INSERTS INCLUDING INTEGRAL CHIP BREAKER
END MILLS WITH PCD INSERTS INCLUDING INTEGRAL CHIP BREAKER Open
Diamond -the chemically metastable form of carbon at room temperature and standard atmospheric pressure -has become the standard material used for cutting tools.Its specific cutting properties also correspond to its difficult machinability…
View article: END MILLS WITH PCD INSERTS SHARPENED BY DIFFERENT ELECTRICAL TECHNOLOGIES
END MILLS WITH PCD INSERTS SHARPENED BY DIFFERENT ELECTRICAL TECHNOLOGIES Open
This paper deals with a design and a shape optimization of a tool that combines punching of a tarpaulin with the tarpaulin grommet pressing in one operation.The tarpaulin grommet 0.5 mm thick with a diameter of 10 mm is made of DX51D+Z275M…
Acoustic and electromagnetic emission of lightweight concrete with polypropylene fibers Open
This paper is focused on failure monitoring in lightweight concrete (special high-performance concrete that contains porous aggregate with a low bulk density) with high-strength polypropylene fibers under mechanical loading.The aim was to …