Mismatch limit loads and approximate J estimates for tensile plates with constant-depth surface cracks in the center of welds

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

Research output: Contribution to journalArticle

23 Citations (Scopus)


The present work provides mismatch limit loads and approximate J estimates for tensile plates with constant-depth, part-through surface cracks in the center of the weld metal. Based on systematic three-dimensional FE limit analyses, effects of strength mismatch related variables on limit loads are firstly quantified by the strength mismatch ratio and one geometry-related parameter. Mismatch limit loads for part-through surface cracks are then correlated to those for two-dimensional, through-wall crack problems. Based on the proposed limit load solutions, the applicability of the reference stress based J estimates is also investigated. When the reference stress is defined by the mismatch limit load, predicted J values agree overall well with FE results.

Original languageEnglish
Pages (from-to)343-360
Number of pages18
JournalInternational Journal of Fracture
Issue number4
Publication statusPublished - 2007 Dec 1
Externally publishedYes



  • Finite element analysis
  • Mismatch limit load
  • Reference stress based J-integral
  • Strength mismatched plate
  • Surface crack

ASJC Scopus subject areas

  • Computational Mechanics
  • Modelling and Simulation
  • Mechanics of Materials

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