Evaluation of stress intensity factors due to welding residual stresses for circumferential cracked pipes

Chang Young Oh; Yun Jae Kim; Young Jin Oh; Jong Sung Kim; Tae Kwang Song; Yong Beum Kim

doi:10.1016/j.ijpvp.2013.03.001

Evaluation of stress intensity factors due to welding residual stresses for circumferential cracked pipes

Chang Young Oh, Yun Jae Kim, Young Jin Oh, Jong Sung Kim, Tae Kwang Song, Yong Beum Kim

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

15 Citations (Scopus)

Abstract

To investigate the applicability of existing methods to estimate stress intensity factors due to welding residual stresses, comparisons with finite element (FE) solutions are made for two types of generic welding residual stress profiles, generated by simulating repair welds. It is found that fitting residual stresses over the crack depth using third-order polynomials gives good estimates of stress intensity factors but fitting over the entire thickness can result in inaccurate estimates even with fourth-order polynomials. Noting that welding residual stresses are often determined from FE analyses, linearization of residual stresses to estimate stress intensity factors is proposed. Comparison with FE solutions shows good agreements.

Original language	English
Pages (from-to)	36-48
Number of pages	13
Journal	International Journal of Pressure Vessels and Piping
Volume	105-106
DOIs	https://doi.org/10.1016/j.ijpvp.2013.03.001
Publication status	Published - 2013 May

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (NRF), grant No. 2012M5A4A103522 and Engineering Research Center (No. 2009-0063170 ), funded by the Korea government (MEST)

Keywords

Circumferential surface cracks
Finite element analysis
Stress intensity factors
Welding residual stress

ASJC Scopus subject areas

General Materials Science
Mechanics of Materials
Mechanical Engineering

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10.1016/j.ijpvp.2013.03.001

Cite this

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title = "Evaluation of stress intensity factors due to welding residual stresses for circumferential cracked pipes",

abstract = "To investigate the applicability of existing methods to estimate stress intensity factors due to welding residual stresses, comparisons with finite element (FE) solutions are made for two types of generic welding residual stress profiles, generated by simulating repair welds. It is found that fitting residual stresses over the crack depth using third-order polynomials gives good estimates of stress intensity factors but fitting over the entire thickness can result in inaccurate estimates even with fourth-order polynomials. Noting that welding residual stresses are often determined from FE analyses, linearization of residual stresses to estimate stress intensity factors is proposed. Comparison with FE solutions shows good agreements.",

keywords = "Circumferential surface cracks, Finite element analysis, Stress intensity factors, Welding residual stress",

author = "Oh, {Chang Young} and Kim, {Yun Jae} and Oh, {Young Jin} and Kim, {Jong Sung} and Song, {Tae Kwang} and Kim, {Yong Beum}",

note = "Funding Information: This work was supported by the National Research Foundation of Korea (NRF), grant No. 2012M5A4A103522 and Engineering Research Center (No. 2009-0063170 ), funded by the Korea government (MEST) ",

year = "2013",

month = may,

doi = "10.1016/j.ijpvp.2013.03.001",

language = "English",

volume = "105-106",

pages = "36--48",

journal = "International Journal of Pressure Vessels and Piping",

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publisher = "Elsevier B.V.",

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T1 - Evaluation of stress intensity factors due to welding residual stresses for circumferential cracked pipes

AU - Oh, Chang Young

AU - Kim, Yun Jae

AU - Oh, Young Jin

AU - Kim, Jong Sung

AU - Song, Tae Kwang

AU - Kim, Yong Beum

N1 - Funding Information: This work was supported by the National Research Foundation of Korea (NRF), grant No. 2012M5A4A103522 and Engineering Research Center (No. 2009-0063170 ), funded by the Korea government (MEST)

PY - 2013/5

Y1 - 2013/5

N2 - To investigate the applicability of existing methods to estimate stress intensity factors due to welding residual stresses, comparisons with finite element (FE) solutions are made for two types of generic welding residual stress profiles, generated by simulating repair welds. It is found that fitting residual stresses over the crack depth using third-order polynomials gives good estimates of stress intensity factors but fitting over the entire thickness can result in inaccurate estimates even with fourth-order polynomials. Noting that welding residual stresses are often determined from FE analyses, linearization of residual stresses to estimate stress intensity factors is proposed. Comparison with FE solutions shows good agreements.

AB - To investigate the applicability of existing methods to estimate stress intensity factors due to welding residual stresses, comparisons with finite element (FE) solutions are made for two types of generic welding residual stress profiles, generated by simulating repair welds. It is found that fitting residual stresses over the crack depth using third-order polynomials gives good estimates of stress intensity factors but fitting over the entire thickness can result in inaccurate estimates even with fourth-order polynomials. Noting that welding residual stresses are often determined from FE analyses, linearization of residual stresses to estimate stress intensity factors is proposed. Comparison with FE solutions shows good agreements.

KW - Circumferential surface cracks

KW - Finite element analysis

KW - Stress intensity factors

KW - Welding residual stress

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U2 - 10.1016/j.ijpvp.2013.03.001

DO - 10.1016/j.ijpvp.2013.03.001

M3 - Article

AN - SCOPUS:84876737847

SN - 0308-0161

VL - 105-106

SP - 36

EP - 48

JO - International Journal of Pressure Vessels and Piping

JF - International Journal of Pressure Vessels and Piping

ER -

Evaluation of stress intensity factors due to welding residual stresses for circumferential cracked pipes

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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