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원전 이종 금속 다층 용접부 잔류응력 예측을 위한 유한요소 변수 민감도 해석Sensitivity Analyses of Finite Element Method for Estimating Residual Stress of Dissimilar Metal Multi-Pass Weldment in Nuclear Power Plant
- Other Titles
- Sensitivity Analyses of Finite Element Method for Estimating Residual Stress of Dissimilar Metal Multi-Pass Weldment in Nuclear Power Plant
- Issue Date
- 2008
- Publisher
- 대한기계학회
- Keywords
- 잔류 응력; 이종금속용접; 일차수응력부식균열; 민감도 해석; Residual Stress; Dissimilar Metal Weld; PWSCC; Sensitivity Analysis
- Citation
- 대한기계학회논문집 A, v.32, no.9, pp.770 - 781
- Indexed
- SCOPUS
KCI
- Journal Title
- 대한기계학회논문집 A
- Volume
- 32
- Number
- 9
- Start Page
- 770
- End Page
- 781
- ISSN
- 1226-4873
- Abstract
- In nuclear power plants, ferritic low alloy steel components were connected with austenitic stainless steel piping system through alloy 82/182 butt weld. There have been incidents recently where cracking has been observed in the dissimilar metal weld. Alloy 82/182 is susceptible to primary water stress corrosion cracking. Weld-induced residual stress is main factor for crack growth. Therefore exact estimation of residual stress is important for reliable operating. This paper presents residual stress computation performed by 6” safety & relief nozzle. Based on 2 dimensional and 3 dimensional finite element analyses, effect of welding variables on residual stress variation is estimated for sensitivity analysis
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Collections - College of Engineering > Department of Mechanical Engineering > 1. Journal Articles
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