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Wyszukujesz frazę "Belan, Juraj" wg kryterium: Autor


Wyświetlanie 1-2 z 2
Tytuł:
Fatigue characteristics of materials used in transport industry applications
Autorzy:
Belan, Juraj
Kuchariková, Lenka
Mazur, Magdalena
Tillová, Eva
Chalupová, Mária
Powiązania:
https://bibliotekanauki.pl/articles/88678.pdf
Data publikacji:
2019
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
fatigue properties
Inconel alloy
aluminum alloy
fatigue fracture
transportation safety
właściwości zmęczeniowe
stop Inconel
stop aluminium
pęknięcie zmęczeniowe
próba zmęczeniowa
bezpieczeństwo transportu
Opis:
Designers have a major interest about fatigue properties of materials used in transport industry. Each component in transport works under alternating stress. From this point of view the fatigue properties are important for single parts lifetime resulting into safety of whole components as cars and airplanes what leads to safety on the roads or air and have influence on human life as well. Therefore this paper deals with fatigue properties of wrought Inconel alloy IN 718 and aluminum cast alloy AlSi9Cu3. Both materials were put on fatigue push – pull test, but Ni – based IN 718 alloy at frequency of loading around 20 000 kHz (High Frequency High Cycles Fatigue) and aluminum alloy AlSi9Cu3 at frequency of loading around 80 Hz (Low Frequency High Cycles Fatigue). These parameters were chosen with respect of usage such materials for production of components used in transport industry applications. Results after fatigue tests are presented as Wohler curve. For prediction of source of fracture the SEM fractography analysis of fatigue fracture surfaces was made.
Źródło:
System Safety : Human - Technical Facility - Environment; 2019, 1, 1; 810-818
2657-5450
Pojawia się w:
System Safety : Human - Technical Facility - Environment
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The quality assurance of cast and wrought aero jet engine components made from Ni-base superalloys with using of quantitative metallography methods and alloys lifetime prediction
Autorzy:
Belan, Juraj
Kuchariková, Lenka
Mazur, Magdalena
Tillová, Eva
Hanusová, Patrícia
Powiązania:
https://bibliotekanauki.pl/articles/104037.pdf
Data publikacji:
2019
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
quality assurance
cast Ni-base superalloys
wrought Ni-base superalloys
turbine blades
turbine disc
quantitative metallography
zapewnienie jakości
superstopy na bazie Ni
łopatki turbin
tarcza turbiny
metalografia ilościowa
Opis:
The Ni-base superalloys are used in the aircraft industry for the production of aero engine most stressed parts, turbine blades or turbine discs. Quality of aero jet engine components has a significant influence on the overall lifetime of a jet engine as itself as well as the whole airplane. From this reason a dendrite arm spacing, grain size, morphology, number and value of γ' - phase are very important structural characteristics for blade or discs lifetime prediction. The methods of quantitative metallography are very often used for evaluation of structural characteristics mentioned above. The high-temperature effect on structural characteristics and application of quantitative methods evaluation are presented in this paper. The two different groups of Ni-base alloys have been used as experimental material: cast alloys ZhS6K and IN713LC, which are used for small turbine blades production and wrought alloys EI 698VD and EI 929, which are used for turbine disc production. Selected alloys have been evaluated in the starting stage and after applied heattreatment at 850°C for 24 hrs. This applied heat-treatment causes structural changes in all alloys groups. In cast alloy dendritic structure is degraded and gamma prime average size has grown what has a negative influence on turbine blade creep rupture life. Wrought alloys show partially grain boundary melting and grain size changed due to recrystallization what causes mechanical properties decreasing - ultimate tensile strength mainly.
Źródło:
Quality Production Improvement - QPI; 2019, 1, 1; 222-229
2657-8603
Pojawia się w:
Quality Production Improvement - QPI
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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