Sensitivity analyses of finite element method for estimating residual stress of dissimilar metal multi-pass weldment in nuclear power plant

Tae Kwang Song, Hong Yeol Bae, Yun Jae Kim, Kyoung Soo Lee, Chi Yong Park

研究成果: Article査読

22 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)770-781
ページ数12
ジャーナルTransactions of the Korean Society of Mechanical Engineers, A
32
9
DOI
出版ステータスPublished - 2008 9 1
外部発表はい

ASJC Scopus subject areas

  • 機械工学

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