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Wyszukujesz frazę "Petrů, Jana" wg kryterium: Autor


Wyświetlanie 1-7 z 7
Tytuł:
Effect of the cutting tool geometry on the tool wear resistance when machining Inconel 625
Autorzy:
Zlámal, Tomáš
Hajnyš, Jiří
Petrů, Jana
Mrkvica, Ivan
Powiązania:
https://bibliotekanauki.pl/articles/102468.pdf
Data publikacji:
2018
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
wear resistance
Inconel 625
cutting tool geometry
entering angle
odporność na zużycie
geometria narzędzia tnącego
kąt wejścia
Opis:
The paper deals with the design of a suitable cutting geometry of a tool for the machining of the Inconel 625 nickel alloy. This alloy is among the hard-to-machine refractory alloys that cause very rapid wear on cutting tools. Therefore, SNMG and RCMT indexable cutting insert were used to machine the alloy. The selected insert geometry should prevent notch wear and extend tool life. The alloy was machined under predetermined cutting conditions. The angle of the main edge and thus the size and nature of the wear changed with the depth of the material layer being cut. The criterion for determining a more suitable cutting geometry was the tool’s durability and the roughness of the machined surface.
Źródło:
Advances in Science and Technology. Research Journal; 2018, 12, 1; 236-243
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Surface microhardening studies on steels after high feed milling
Autorzy:
Petrů, Jana
Zlámal, Tomáš
Špalek, František
Čep, Robert
Powiązania:
https://bibliotekanauki.pl/articles/102402.pdf
Data publikacji:
2018
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
surface integrity
microhardness
high speed machining
integralność powierzchni
mikrotwardość
obróbka z dużą prędkością
Opis:
The paper deals with the impact of high-speed machining production methods on the integrity of component surfaces. One has to point out that cutting conditions during machining have a significant impact on the final properties of surface and subsurface layers of the workpiece. The conclusion summarizes and analyzes the achieved results of experimental activities on stainless austenitic steel 1.4301, hardened tool steel 1.2343 and high-speed steel 1. 3344 (ASP 2023). The results of the work experimental parts demonstrate the influence of cutting parameters on selected surface integrity ones, specifically strengthening the surface and subsurface layers. The performed experiments show that microhardness of a surface layer of the machined material can be influenced by suitable cutting conditions and other cutting process parameters.
Źródło:
Advances in Science and Technology. Research Journal; 2018, 12, 2; 222-230
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A choice of the optimum cutting ranges for cutting nozzles A-SD for selection of metallurgical material
Autorzy:
Stančeková, Dana
Rudawska, Anna
Kulla, Albert
Petrů, Jana
Holubják, Jozef
Powiązania:
https://bibliotekanauki.pl/articles/102340.pdf
Data publikacji:
2018
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
cutting nozzles
data from catalogues
cutting parameters
final results
dysze tnące
dane z katalogów
parametry cięcia
ostateczne rezultaty
Opis:
On the market there are plenty of machines for cutting of steel via a mixture of oxygen and flammable gases. Various manufacturers provide several types of torches, cutting nozzles and other equipment in their product range. Cutting nozzles are a component that significantly affects quality of cutting based in set parameters. However, data from catalogues and manuals by manufacturers on cutting parameters of nozzles are rarely in use in real conditions. That is why optimum cutting conditions for cutting via nozzles A-SD made by RHONA were tested and the final results were compared with those in the catalogue for a proper use in practice.
Źródło:
Advances in Science and Technology. Research Journal; 2018, 12, 3; 106-113
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental Investigation of Cutting Forces in High-Feed Milling of Titanium Alloy
Autorzy:
Petrů, Jana
Drábek, Lukáš
Hajnyš, Jiří
Jurok, Dalibor
Pagáč, Marek
Měsíček, Jakub
Powiązania:
https://bibliotekanauki.pl/articles/102619.pdf
Data publikacji:
2020
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
high-feed milling
titanium alloy
cutting forces
frezowanie z dużymi posuwami
stop tytanu
siły skrawania
Opis:
Titanium super alloys are often used in the chemical and aerospace industries, especially because of financial savings, resulting primarily from cheaper operation of equipment. Machinability of titanium alloys is more difficult than that of other metals. In addition, the low thermal conductivity causes the alloy to stick to the cutting edge of the cutting tool, thereby causing it to become dull faster. The article deals with the experimental evaluation of cutting forces and the design of suitable cutting parameters for the machining of the UNS R56260 titanium alloy with high-feed milling technology. Testing was carried out in climb and conventional milling under different cutting conditions. The cutting components of forces Fx, Fy, Fz were measured and evaluated. The results of the measurements were processed into a graphical form and suitable cutting conditions were designed in terms of the acting cutting forces.
Źródło:
Advances in Science and Technology. Research Journal; 2020, 14, 1; 89-95
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of spatial distribution and the type of material on the occurrence of bandgaps in phononic crystals
Autorzy:
Garus, Sebastian
Sochacki, Wojciech
Kwiatoń, Paweł
Nabiałek, Marcin
Petrů, Jana
Kubanek, Mariusz
Powiązania:
https://bibliotekanauki.pl/articles/27311439.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
finite difference time domain
band gap
phononic crystal
mechanical waves
propagation
domena czasowa różnic skończonych
kryształ fononiczny
fale mechaniczne
propagacja
przerwa energetyczna
Opis:
The study investigated the effect of the fill factor, lattice constant, and the shape and type of meta-atom material on the reduction of mechanical wave transmission in quasi-two-dimensional phononic structures. A finite difference algorithm in the time domain was used for the analysis, and the obtained time series were converted into the frequency domain using the discrete Fourier transform. The use of materials with large differences in acoustic impedance allowed to determine the influence of the meta-atom material on the propagation of the mechanical wave.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2023, 71, 3; art. no. e144609
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of the suitability of a fused filament fabricated tool for incremental sheet metal forming
Autorzy:
Weise, Dieter
Langner, Christian
Pierer, Alexander
Kraeusel, Verena
Petru, Jana
Koziorek, Jiri
Prauzek, Michal
Powiązania:
https://bibliotekanauki.pl/articles/29520057.pdf
Data publikacji:
2023
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
incremental sheet forming
rapid tooling
additive manufacturing
Opis:
Incremental sheet forming (ISF) is a flexible manufacturing process for sheet metal parts in small to medium quantities. Successive movements of a stylus create the geometry of the sheet metal part. ISF can be performed with or without a counter tool. By using counter tools, the geometry deviation of the formed sheet metal part can be reduced. To achieve the broader application of ISF, counter tools must be cost-effective, fast, and individually producible, even for batch sizes of only one part. In addition to milling, which has been the main method used to date, additive manufacturing (AM) also makes it possible to meet these requirements for flexible counter tool production. To investigate the suitability of AM for the production of counter tools for the ISF and to learn more about the load on the counter tool, a cylindrical counter tool made of polylactic acid (PLA) was produced using the fused filament fabrication (FFF) process. This counter tool was used for the ISF of drawing steel. Based on the force measurement results, a first step towards suitability evaluation of 3D-printed counter tools for ISF was taken, and possibilities, as well as application limits for such counter tools were discussed.
Źródło:
Computer Methods in Materials Science; 2023, 23, 1; 43-49
2720-4081
2720-3948
Pojawia się w:
Computer Methods in Materials Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of material distribution and damping on the dynamic stability of Bernoulli-Euler beams
Autorzy:
Garus, Sebastian
Garus, Justyna
Sochacki, Wojciech
Nabiałek, Marcin
Petru, Jana
Borek, Wojciech
Šofer, Michal
Kwiatoń, Paweł
Powiązania:
https://bibliotekanauki.pl/articles/27311458.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
mechanical vibrations
damping
beam
dynamic stability
Mathieu equation
wibracje mechaniczne
tłumienie
belka
stabilność dynamiczna
równanie Mathieu
Opis:
The study analyzed the influence of materials and different types of damping on the dynamic stability of the Bernoulli-Euler beam. Using the mode summation method and applying an orthogonal condition of eigenfunctions and describing the analyzed system with the Mathieu equation, the problem of dynamic stability was solved. By examining the influence of internal and external damping and damping in the beam supports, their influence on the regions of stability and instability of the solution to the Mathieu equation was determined.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2023, 71, 4; art. no. e145567
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-7 z 7

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