Effects of similar metal weld on residual stress in dissimilar metal weld according to safe end length kimy0308@korea.ac.kr

Tae Kwang Song; Yun Bae Chun; Chang Young Oh; Hong Yeol Bae; Yun Jae Kim; Sang Hoon Lee; Kyoung Soo Lee; Chi Yong Park

doi: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 [email protected]

Tae Kwang Song, Yun Bae Chun, Chang Young Oh, Hong Yeol Bae, Yun Jae Kim, Sang Hoon Lee, Kyoung Soo Lee, Chi Yong Park

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

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.

Original language	English
Pages (from-to)	664-672
Number of pages	9
Journal	Transactions of the Korean Society of Mechanical Engineers, A
Volume	33
Issue number	7
DOIs	https://doi.org/10.3795/KSME-A.2009.33.7.664
Publication status	Published - 2009
Externally published	Yes

Keywords

Dissimilar metal weld
Safe end
Similar
Welding residual stress

ASJC Scopus subject areas

Mechanical Engineering

Access to Document

10.3795/KSME-A.2009.33.7.664

Cite this

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title = "Effects of similar metal weld on residual stress in dissimilar metal weld according to safe end length [email protected]",

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 = "Dissimilar metal weld, Safe end, Similar, Welding residual stress",

author = "Song, {Tae Kwang} and Chun, {Yun Bae} and Oh, {Chang Young} and Bae, {Hong Yeol} and Kim, {Yun Jae} and Lee, {Sang Hoon} and Lee, {Kyoung Soo} and Park, {Chi Yong}",

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TY - JOUR

T1 - Effects of similar metal weld on residual stress in dissimilar metal weld according to safe end length [email protected]

AU - Song, Tae Kwang

AU - Chun, Yun Bae

AU - Oh, Chang Young

AU - Bae, Hong Yeol

AU - Kim, Yun Jae

AU - Lee, Sang Hoon

AU - Lee, Kyoung Soo

AU - Park, Chi Yong

PY - 2009

Y1 - 2009

N2 - 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.

AB - 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.

KW - Dissimilar metal weld

KW - Safe end

KW - Similar

KW - Welding residual stress

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