대한기계학회:학술대회논문집 (Proceedings of the KSME Conference)
- 대한기계학회 2000년도 추계학술대회논문집A
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- Pages.286-291
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- 2000
가압열충격 사고시 클래스 하부균열 안전성 평가 방법에 관한 연구
A Study on the Integrity Evaluation Method of Subclad Crack under Pressurized Thermal Shock
- 발행 : 2000.11.02
초록
The reactor pressure vessel is usually cladded with stainless steel to prevent corrosion and radiation embrittlement, and number of subclad cracks have been found during an in-service-inspection. Therefore assessment for subclad cracks should be made for normal operating conditions and faulted conditions such as PTS. Thus, in order to find the optimum fracture assessment procedures for subclad cracks under a pressurized thermal shock condition, in this paper, three different analyses were performed, ASME Sec. XI code analysis, an LEFM(Liner elastic fracture mechanics) analysis and an EPFM(Elastic plastic fracture mechanics) analysis. The stress intensity factor and the Maximum
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