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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국유체기계학회 International Journal of Fluid Machinery and Systems International Journal of Fluid Machinery and Systems Vol.8 No.4
- 발행연도
- 2015.12
- 수록면
- 254 - 263 (10page)
- DOI
- http://dx.doi.org/10.5293/IJFMS.2015.8.4.254
이용수
초록· 키워드
오류제보하기
The failure of hydraulic turbine runners is a rare event. So in order to assess the reliability of these components one cannot rely solely on the number of observed failures in a given population. However, as there is a limited number of degradation mechanisms involved, it is possible to use physically-based reliability models. Such models are often more complicated but are able to account for physical parameters in the degradation process. They can therefore help provide solutions to improve reliability. With such models, the effect of materials properties on runner reliability can be highlighted. This paper presents a brief review of the Kitagawa-Takahashi diagram which links the damage tolerance approach, based on fracture mechanics, to the stress or strain-life approaches. Using simplified response spectra based on runner stress measurements, we will show how fatigue reliability is sensitive to materials fatigue properties, namely fatigue crack propagation behaviour and fatigue limit obtained on S-N curves. Furthermore, we will review the influence of the main microstructural features observed in 13%Cr-4%Ni stainless steels commonly used for runner manufacturing. The goal is ultimately to identify the most influential microstructural features and to quantify their effect on fatigue reliability of runners.
목차
등록된 정보가 없습니다.
참고문헌 (56)
참고문헌 신청
[학술지(정기간행물)] - Gagnon M / 2013 / A probabilistic model for the onset of High Cycle Fatigue (HCF) crack propagation: Application to hydroelectric turbine runner / Int. J. Fatigue 47 : 300 ~ 307
[학술대회논문] - Kitagawa H / 1976 / Applicability of fracture mechanics to very small cracks or the cracks in the early stage / Second International Conference on Mechanical Behavior of Materials : 627 ~ 631
[학술지(정기간행물)] - Gagnon M / 2013 / On the Fatigue Reliability of Hydroelectric Francis Runners / Procedia Engineering 66 : 565 ~ 574
[학술지(정기간행물)] - Gagnon M / 2012 / The role of high cycle fatigue (HCF) onset in Francis runner reliability / IOP Conference Series: Earth and Environmental Science 15 : 022005 ~
[학술지(정기간행물)] - Gagnon M / 2014 / Influence of load spectrum assumptions on the expected reliability of hydroelectric turbines: A case study / Structural Safety 50 : 1 ~ 8
[학술대회논문] - Kitagawa H / 1976 / Applicability of fracture mechanics to very small cracks or the cracks in the early stage / Second International Conference on Mechanical Behavior of Materials : 627 ~ 631
[학술지(정기간행물)] - Gagnon M / 2013 / On the Fatigue Reliability of Hydroelectric Francis Runners / Procedia Engineering 66 : 565 ~ 574
[학술지(정기간행물)] - Gagnon M / 2012 / The role of high cycle fatigue (HCF) onset in Francis runner reliability / IOP Conference Series: Earth and Environmental Science 15 : 022005 ~
[학술지(정기간행물)] - Gagnon M / 2014 / Influence of load spectrum assumptions on the expected reliability of hydroelectric turbines: A case study / Structural Safety 50 : 1 ~ 8
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UCI(KEPA) : I410-ECN-0101-2018-554-001912150