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

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

Research output: Contribution to journalArticle

15 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 languageEnglish
Pages (from-to)1074-1086
Number of pages13
JournalEngineering Fracture Mechanics
Volume76
Issue number8
DOIs
Publication statusPublished - 2009 May

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

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