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http://dx.doi.org/10.3795/KSME-A.2009.33.7.664

Effects of Similar Metal Weld on Residual Stress in Dissimilar Metal Weld According to Safe End Length  

Song, Tae-Kwang (고려대학교 기계공학부(원))
Chun, Yun-Bae (고려대학교 기계공학부(원))
Oh, Chang-Young (고려대학교 기계공학부(원))
Bae, Hong-Yeol (고려대학교 기계공학부(원))
Kim, Yun-Jae (고려대학교 기계공학부)
Lee, Sang-Hoon (한국기계연구원)
Lee, Kyoung-Soo (한전전력연구원)
Park, Chi-Yong (한전전력연구원)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.33, no.7, 2009 , pp. 664-672 More about this Journal
Abstract
Nozzle in nuclear power plant is connected to pipe using safe end. Dissimilar metal weld between nozzle and safe end is followed by similar metal weld between safe end and pipe. And thus residual stress in dissimilar metal weld can be affected by similar metal weld. Similar metal weld impose bending stress on dissimilar metal weld, which is according to the length of safe end. In this study, simple nozzle model which covers various radius to thickness ratios was proposed to quantify residual stress in dissimilar metal weld based on finite element analyses. As a result, short length of safe end was proved to be more effective to mitigate residual stress in dissimilar metal weld and critical effective length of safe end is provided according to the radius to thickness ratio.
Keywords
Welding Residual Stress; Dissimilar Metal Weld; Similar Metal Weld; Safe End;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
Times Cited By SCOPUS : 2
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