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Wyszukujesz frazę "Novy, F." wg kryterium: Autor


Wyświetlanie 1-10 z 10
Tytuł:
Quality Management in the Process of Selection of Material for Dump Truck Elements
Autorzy:
Ulewicz, R.
Nový, F.
Powiązania:
https://bibliotekanauki.pl/articles/2064970.pdf
Data publikacji:
2018
Wydawca:
STE GROUP
Tematy:
quality management
material selection
objective function
dump truck
Opis:
The article presents the problem of quality management in the process of material selection for structural elements of a car dump truck. The study took into account the classical management pyramid and there was used the optimization method (generalized objective function). The center that manages the process of production / assembly of the dump truck should be the level of organization that has the highest degree of processing of required information and making strategic decisions in this respect. The design process of structural elements is carried out primarily in terms of the ability to provide adequate physical and mechanical properties in the process. There is a very strong tendency to reduce the own weight of the semi-trailers by increasing the weight of the load. This is an important criterion from the point of view of the economics of operation of technical facilities of this type. The article presents the results of the application of a generalized objective function in the field of material selection for construction elements of a dump truck. The analysis includes structural elements made of S355 steel and Hardox 400 and 450 fine-grain steel.
Źródło:
Multidisciplinary Aspects of Production Engineering; 2018, 1, 1; 665--671
2545-2827
Pojawia się w:
Multidisciplinary Aspects of Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fractography analysis of Inconel 718 fatigued at 700°C
Autorzy:
Jambor, M.
Belan, J.
Bokuvka, O.
Novy, F.
Powiązania:
https://bibliotekanauki.pl/articles/111594.pdf
Data publikacji:
2016
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
Inconel 718
high temperature fatigue
fractography analysis
zmęczenie cieplne
nadstop na bazie niklu
analiza fraktograficzna
odkształcenia plastyczne
Opis:
This work deals with the fractography analysis of nickel-base superalloy Inconel 718 fatigued at 700°C in air atmosphere in the high cycle region. During cyclic loading of this alloy at high temperatures some different mechanisms compared to cyclic loading at ambient temperature take place. Cyclic plastic deformation at high temperatures causes some structural changes, which could have some influence.
Źródło:
Production Engineering Archives; 2016, 13, 4; 20-25
2353-5156
2353-7779
Pojawia się w:
Production Engineering Archives
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fatigue properties of the HSLA steel in high and ultra-high cycle region
Autorzy:
Ulewicz, R.
Novy, F.
Mazur, М.
Szataniak, P.
Powiązania:
https://bibliotekanauki.pl/articles/111629.pdf
Data publikacji:
2014
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
HSLA steels
Hardox 400
ultra-high-cycle fatigue
S–N curve
stale HSLA
ultra-wysoki cykl zmęczenia
krzywa S-N
Opis:
This work presents a study of the fatigue properties in the example of Swedish steel Hardox 400. Fatigue tests were carried out in the area of high and ultra-high cycle region. From the practical point of view the durability of some components in the automotive industry and similar technical applications such as special semitrailers ranges between 108 and 1010 cycles. But, only a few experimental results beyond 107 cycles are available now. The main objective of this research was to provide independent results to the company which uses Hardox steel in the construction of semitrailers. Selected mechanical and fatigue tests were carried out with the aim to study fatigue properties of Hardox steel. Based on the obtained experimental results the fatigue properties of this still not well recognized type of steel are discussed.
Źródło:
Production Engineering Archives; 2014, 4, 3; 18-21
2353-5156
2353-7779
Pojawia się w:
Production Engineering Archives
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Quality and fatigue characteristics relation
Autorzy:
Trsko, L.
Bokuvka, O.
Novy, F.
Lago, J
Powiązania:
https://bibliotekanauki.pl/articles/111638.pdf
Data publikacji:
2016
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
structural steels
fatigue
fatigue parameters relation
stale konstrukcyjne
charakterystyki zmęczeniowe
zmęczenie materiałów
Opis:
This paper will explore the mutual correlation of fatigue characteristics ((Kath, σc, ac = f (Rm)) of five structural steels tested at high frequency loading based on tests (f ≈ 20 kHz, T = 20 ± 10 °C, R = -1). Different fatigue resistance parameters have different meanings and misunderstanding can lead to significant quality problems in component operation. Consequently, it is necessary to completely understand the relation between the two most important fatigue characteristics which are fatigue limit σc and the threshold value of the stress intensity factor amplitude Kath and how they act with changing of steel ultimate tensile strength.
Źródło:
Production Engineering Archives; 2016, 10, 1; 9-12
2353-5156
2353-7779
Pojawia się w:
Production Engineering Archives
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fatigue strength improvement of the AISI 316Ti austenitic stainless steel by shot peening
Autorzy:
Novy, F.
Dundekova, S.
Bokuvka, O.
Trsko, L.
Powiązania:
https://bibliotekanauki.pl/articles/111990.pdf
Data publikacji:
2014
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
stainless steel
AISI 316L
shot peening
fatigue strength
stal nierdzewna
śrutowanie
wytrzymałość na zmęczenie
Opis:
Stainless steels are structural materials used for a wide range of applications. One of the fields of application of these highly corrosion resistant materials is for various medical applications. Different methods of mechanical property improvement have been studied in recent years to increase the durability of components manufactured from these materials. The main goal of this study was an analysis of fatigue strength improvement of the AISI 316Ti austenitic stainless steel by shot peening. A significant improvement of surface hardness, yield strength and fatigue limit by shot peening was observed in this study. This is despite increasing the surface roughness which usually degrades material’s fatigue strength.
Źródło:
Production Engineering Archives; 2014, 4, 3; 2-6
2353-5156
2353-7779
Pojawia się w:
Production Engineering Archives
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Gigacycle fatigue at high-frequency loading
Autorzy:
Bokůvka, O.
Nový, F.
Chalupová, M.
Nicoletto, G.
Powiązania:
https://bibliotekanauki.pl/articles/329118.pdf
Data publikacji:
2008
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
materiał strukturalny
zmęczenie materiału
właściwości
gigacycle fatigue
high-frequency loading
structural material
Opis:
In this work there are information about an experimental high-frequency testing apparatus and specimens enable to determine the fatigue properties in the ultra-high-cycles region (gigacycle fatigue) and the rates of long fatigue cracks growth in near-threshold areas. The selected characteristic examples about fatigue resistance of various structural materials are presented. The results are utilizable in the field of material engineering and threshold states of material.
Źródło:
Diagnostyka; 2008, 4(48); 53-56
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Phase Transformations in Nickel base Superalloy Inconel 718 during Cyclic Loading at High Temperature
Autorzy:
Jambor, M.
Bokuvka, O.
Novy, F.
Trsko, L.
Belan, J.
Powiązania:
https://bibliotekanauki.pl/articles/111867.pdf
Data publikacji:
2017
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
nickel base superalloy
Inconel 718
phase transformations
high temperature fatigue
nadstop na bazie niklu
przemiany fazowe
zmęczenie cieplne
zmęczenie materiału
Opis:
Nickel base superalloys are hi-tech materials intended for high temperature applications. This property owns a complex microstructure formed by matrix of Ni and variety of precipitates. The type, form and the amount of these phases significantly affect the resulting properties of these alloys. At sufficiently long exposure to high temperatures, the transformation phase can occur, which can lead to degradation of properties of these alloys. A cyclic plastic deformation can accelerate these changes, and they could occur at significantly lower temperatures or in shorter time of exposure. The aim of this study is to describe phase transformation, which can occur by a cyclic plastic deformation at high temperatures in nickel base superalloy Inconel 718.
Źródło:
Production Engineering Archives; 2017, 15; 15-18
2353-5156
2353-7779
Pojawia się w:
Production Engineering Archives
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of long-term heating on the fatigue properties of low-alloyed cast steel STN 42 2707
Autorzy:
Bokuvka, O.
Jambor, M.
Novy, F.
Trsko, L.
Lago, J
Powiązania:
https://bibliotekanauki.pl/articles/111812.pdf
Data publikacji:
2016
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
cast steel STN 42 2707
long-term heating
fatigue properties
Kath
da/dN = f(Ka)
staliwa
własności zmęczeniowe
pęknięcie zmęczeniowe
Opis:
In this paper the authors publish own experimental results of examination of low-alloyed cast steel STN 42 2707 fatigue properties (near- threshold regime of fatigue crack propagation for rates from da/dN =5.6x10-9m.cycle-1 to da/dN =10-12 m.cycle-1 and Kath at da/dN =10-12 m.cycle-1) initial state and after long-term heating (T = 400 °C, t = 4000 hours ≈ 167 days) obtained at high-frequency loading (f ≈ 20 kHz, T= 20 ± 5 °C, R = -1). The long-term heating of material caused decrease of Kath and increase of fatigue crack growth rate in the near-threshold regime; then worse of low-alloyed cast steel STN 42 2707 fatigue properties.
Źródło:
Production Engineering Archives; 2016, 12, 3; 30-33
2353-5156
2353-7779
Pojawia się w:
Production Engineering Archives
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fatigue lifetime of 20MnV6 steel with holes manufactured by various methods
Autorzy:
Bokůvka, O.
Jambor, M.
Trško, L.
Nový, F.
Lisiecka, B.
Powiązania:
https://bibliotekanauki.pl/articles/111905.pdf
Data publikacji:
2018
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
steel 20MnV6
fatigue lifetime
high-cycle fatigue
stal 20MnV6
trwaość zmęczeniowa
zmęczenie wysokocyklowe
Opis:
In this paper, the authors publish their own experimental results of the examination of the different holes (milled, drilled and drilled + shot peened) on the fatigue lifetime of 20MnV6 steel. The experiments were carried out at low-frequency loading (f = 10 Hz, pulsating tension loading) in the region from N = 2×105 up to N = 2×106 cycles. The best fatigue properties were obtained in the parts with drilled + shot peened holes.
Źródło:
Production Engineering Archives; 2018, 19; 3-5
2353-5156
2353-7779
Pojawia się w:
Production Engineering Archives
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Very High Cycle Fatigue Behaviour of Ti-6Al-4V Alloy
Autorzy:
Janeček, M.
Nový, F.
Harcuba, P.
Stráský, J.
Trško, L.
Mhaede, M.
Wagner, L.
Powiązania:
https://bibliotekanauki.pl/articles/1402062.pdf
Data publikacji:
2015-10
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
46.50.+a
62.20.M-
81.40.Np
Opis:
The high cycle and very high cycle fatigue properties of the titanium alloy Ti-6Al-4V with a duplex microstructure were investigated at room temperature. High cycle fatigue tests were performed in the range from 10⁴ to 10⁷ cycles by rotating bending at the frequency of 30 Hz. The very high cycle fatigue tests were carried out in the range from 10⁷ to 10¹⁰ cycles in tension-compression on an ultrasonic fatigue testing machine at the frequency of 20 kHz. The stress amplitude was found to decrease with increasing number of cycles in the whole range from 10⁴ up to 10⁹ cycles and only at the highest number of cycles $(N_{F}=10^9)$ the alloy exhibits the fatigue limit of 460 MPa. The detail fractographic analysis was performed to characterize the fatigue failure mechanisms. Both subsurface and surface crack initiation were observed in very high cycle fatigue region. No inclusions, but only local chemical inhomogeneity in microstructure was observed at the locations of subsurface fatigue crack initiation in alpha-grains.
Źródło:
Acta Physica Polonica A; 2015, 128, 4; 497-502
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-10 z 10

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