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http://dx.doi.org/10.3795/KSME-A.2008.32.9.770

Sensitivity Analyses of Finite Element Method for Estimating Residual Stress of Dissimilar Metal Multi-Pass Weldment in Nuclear Power Plant  

Song, Tae-Kwang (고려대학교 대학원 기계공학과)
Bae, Hong-Yeol (고려대학교 대학원 기계공학과)
Kim, Yun-Jae (고려대학교 기계공학과)
Lee, Kyoung-Soo (한전전력연구원)
Park, Chi-Yong (한전전력연구원)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.32, no.9, 2008 , pp. 770-781 More about this Journal
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.
Keywords
Residual Stress; Dissimilar Metal Weld; PWSCC; Sensitivity Analysis;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
Times Cited By SCOPUS : 8
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