Strength mis-match effect on limit loads for circumferential surface cracked pipes

Jong Sung Kim; Tae Kwang Song; Yun Jae Kim; Tae Eun Jin

doi:10.1016/j.engfracmech.2009.01.008

Strength mis-match effect on limit loads for circumferential surface cracked pipes

Jong Sung Kim, Tae Kwang Song, Yun Jae Kim, Tae Eun Jin

School of Mechanical Engineering

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

18 Citations (Scopus)

Abstract

The present work provides mis-match limit loads for welded pipes with constant-depth, circumferential part-through surface cracks in the centre of the weld metal. As limiting cases, circumferential through-wall and fully circumferential cracks are also considered. Based on systematic finite element limit analyses, mis-match limit loads are quantified by the strength mis-match ratio and only one geometry-related slenderness parameter, not requiring additional geometry-related parameters. This implies that mis-match limit loads for surface cracked pipes can be found from those for idealized axi-symmetric problems, which offers significant benefit in assessment of surface cracks in welds of pipes.

Original language	English
Pages (from-to)	1074-1086
Number of pages	13
Journal	Engineering Fracture Mechanics
Volume	76
Issue number	8
DOIs	https://doi.org/10.1016/j.engfracmech.2009.01.008
Publication status	Published - 2009 May

Bibliographical note

Funding Information:
This research is performed under programs of Basic Atomic Energy Research Institute and Engineering Research Center (No. R11-2007-028-00000-0), funded by Korea Science & Engineering Foundation.

Keywords

Circumferential part-through surface cracked pipe
Finite element analysis
Mis-match limit load
Reference stress based J estimates
Strength mis-match

ASJC Scopus subject areas

Materials Science(all)
Mechanics of Materials
Mechanical Engineering

Access to Document

10.1016/j.engfracmech.2009.01.008

Cite this

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title = "Strength mis-match effect on limit loads for circumferential surface cracked pipes",

abstract = "The present work provides mis-match limit loads for welded pipes with constant-depth, circumferential part-through surface cracks in the centre of the weld metal. As limiting cases, circumferential through-wall and fully circumferential cracks are also considered. Based on systematic finite element limit analyses, mis-match limit loads are quantified by the strength mis-match ratio and only one geometry-related slenderness parameter, not requiring additional geometry-related parameters. This implies that mis-match limit loads for surface cracked pipes can be found from those for idealized axi-symmetric problems, which offers significant benefit in assessment of surface cracks in welds of pipes.",

keywords = "Circumferential part-through surface cracked pipe, Finite element analysis, Mis-match limit load, Reference stress based J estimates, Strength mis-match",

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note = "Funding Information: This research is performed under programs of Basic Atomic Energy Research Institute and Engineering Research Center (No. R11-2007-028-00000-0), funded by Korea Science & Engineering Foundation.",

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AU - Song, Tae Kwang

AU - Kim, Yun Jae

AU - Jin, Tae Eun

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N2 - The present work provides mis-match limit loads for welded pipes with constant-depth, circumferential part-through surface cracks in the centre of the weld metal. As limiting cases, circumferential through-wall and fully circumferential cracks are also considered. Based on systematic finite element limit analyses, mis-match limit loads are quantified by the strength mis-match ratio and only one geometry-related slenderness parameter, not requiring additional geometry-related parameters. This implies that mis-match limit loads for surface cracked pipes can be found from those for idealized axi-symmetric problems, which offers significant benefit in assessment of surface cracks in welds of pipes.

AB - The present work provides mis-match limit loads for welded pipes with constant-depth, circumferential part-through surface cracks in the centre of the weld metal. As limiting cases, circumferential through-wall and fully circumferential cracks are also considered. Based on systematic finite element limit analyses, mis-match limit loads are quantified by the strength mis-match ratio and only one geometry-related slenderness parameter, not requiring additional geometry-related parameters. This implies that mis-match limit loads for surface cracked pipes can be found from those for idealized axi-symmetric problems, which offers significant benefit in assessment of surface cracks in welds of pipes.

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KW - Mis-match limit load

KW - Reference stress based J estimates

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Strength mis-match effect on limit loads for circumferential surface cracked pipes

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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