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논문 기본 정보

자료유형
학술대회자료
저자정보
Jong Sung Kim (한국전력기술) Tae Eun Jin (한국전력기술)
저널정보
대한기계학회 대한기계학회 춘추학술대회 대한기계학회 2006년도 제1차 재료 및 파괴부문 학술대회 논문집
발행연도
2006.3
수록면
16 - 21 (6page)

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초록· 키워드

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In this paper, a new analysis procedure for LWR environmental fatigue lifetime of nuclear welded structure is proposed on the basis of a structural stress/fracture mechanics approach. The validity of the mesh-insensitive structural stress procedure presented by Pingsha Dong is identified comparing the structural stresses calculated for various FE models. Fatigue crack initiation cycles are determined by using the structural stresses and the fatigue crack growth model considering LWR environmental effect. In addition, in order to compare the new fatigue analysis procedure with the existing procedures such as F<SUB>en</SUB> methods and Battelle's structural stress/fracture mechanics approach, the fatigue crack initiation cycles are determined by using the existing procedures. Environmental fatigue test is also performed to identify the validity of the fatigue analysis procedures. As a result of comparison of analysis results with test data, it is found that the new fatigue analysis based on structural stress/fracture mechanics approach is the most reliable procedure for environmental fatigue. Finally, the additional requirements for developing the more reliable and applicable new fatigue analysis procedure, which is based on structural stress/fracture mechanics, are presented.

목차

Abstract
1. INTRODUCTION
2. PREVIOUS FATIGUE ANALYSIS PROCEDURES
3. NEW FATIGUE ANALYSIS BASED ON STRUCTURAL STRESSES/FRACTURE MECHANICS APPROACH
4. FATIGUE TEST
5. CONCLUSIONS
References

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