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Wyszukujesz frazę "residual stresses" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
Estimation of residual stresses for multi-layer circumferential welds of oil and gas pipelines
Autorzy:
Kychma, Andrii
Predko, Rostyslav
Powiązania:
https://bibliotekanauki.pl/articles/329392.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
pipelines
circumferential welds
residual stresses
pressure reservoir
hydraulic testing
rurociąg
naprężenia własne
spoiny spawane
zbiornik ciśnieniowy
badania hydrauliczne
Opis:
The article presents results of investigation of residual stresses for multi-layer circumferential welds of oil and gas pipelines. The research was carried out on a designed and manufactured testing equipment for the experimental determination of the stress state parameters in the zone of multi-layer welded joints of pipe segments with the external diameter of 1020 mm and the wall thicknesses of 9.5 mm, of 14 mm, and of 22 mm which were made of carbon steels of different quality (13G1S, 13G1SU, 17G1S and 17G1SU). Determination of residual stresses in the zone of multi-layered circumferential welds of pipe segments was carried out by means of the method by the electronic speckle-interferometry and by the method of magnetoelasticity. On the basic of analysis of the obtained graphic dependences, the recommendations for engineering practice are suggested.
Źródło:
Diagnostyka; 2019, 20, 4; 11-18
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The use of surface acoustic waves to evaluate of the near-surface layers of metal processed shot peening
Autorzy:
Skalskyi, Valentyn
Student, Mykhaylo
Mokryy, Oleh
Dudda, Waldemar
Kharchenko, Yevhen
Chumalo, Halyna
Hvozdetskyi, Volodymyr
Powiązania:
https://bibliotekanauki.pl/articles/1840854.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
shot peening
Rayleigh surface wave velocity
residual mechanical stresses
roughness
chropowatość
prędkość fali
fala powierzchniowa Rayleigha
naprężenia własne
Opis:
The surface layers of low-carbon steel metal subjected to shot peening were studied. The velocity of Rayleigh surface waves of various frequencies in the range of 3-9 MHz by the phase-pulse method using contact piezoelectric transducers measured. The study of the distribution of residual mechanical stresses in depth was carried out using the etching of the surface layer of the metal and the use of a strain gauges. The characteristics of the roughness of the surface layer of the metal, which has arisen as a result of shot peening, have been determined. The effect of roughness and plastically deformed layer on the velocity of surface acoustic waves (SAW) is estimated by the method of layer-by-layer grinding of the surface layers of the metal. Based on the determination of the magnitude of the residual mechanical stresses and the known acoustoelastic coefficients, the magnitude of the change in the velocity of SAW under the action of these stresses is estimated.
Źródło:
Diagnostyka; 2021, 22, 3; 51-57
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The use of surface acoustic waves to evaluate of the near-surface layers of metal processed shot peening
Autorzy:
Skalskyi, Valentyn
Student, Mykhaylo
Mokryy, Oleh
Dudda, Waldemar
Kharchenko, Yevhen
Chumalo, Halyna
Hvozdetskyi, Volodymyr
Powiązania:
https://bibliotekanauki.pl/articles/1840877.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
shot peening
Rayleigh surface wave velocity
residual mechanical stresses
roughness
chropowatość
prędkość fali
fala powierzchniowa Rayleigha
naprężenia własne
Opis:
The surface layers of low-carbon steel metal subjected to shot peening were studied. The velocity of Rayleigh surface waves of various frequencies in the range of 3-9 MHz by the phase-pulse method using contact piezoelectric transducers measured. The study of the distribution of residual mechanical stresses in depth was carried out using the etching of the surface layer of the metal and the use of a strain gauges. The characteristics of the roughness of the surface layer of the metal, which has arisen as a result of shot peening, have been determined. The effect of roughness and plastically deformed layer on the velocity of surface acoustic waves (SAW) is estimated by the method of layer-by-layer grinding of the surface layers of the metal. Based on the determination of the magnitude of the residual mechanical stresses and the known acoustoelastic coefficients, the magnitude of the change in the velocity of SAW under the action of these stresses is estimated.
Źródło:
Diagnostyka; 2021, 22, 3; 51-57
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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