Decomposition of interfacial crack driving forces in dissimilar joints

Yun Jae Kim, Hyungyil Lee

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


This paper presents a framework how to estimate crack driving forces in terms of crack-tip opening displacement and J-integral for mismatched dissimilar joints with interface cracks. The mismatch in elastic, thermal, and plastic hardening properties is not considered, but the mismatch in plastic yield strengths is emphasized here. The main outcome of the present work is that the existing methods to estimate crack driving forces for homogeneous materials can be used with slight modification. Such modification includes (i) mismatch-corrected limit load solutions, and (ii) evaluating the contribution of each material in dissimilar joints to the total crack driving force, which depends on the strength mismatch of the dissimilar joints.

Original languageEnglish
Pages (from-to)30-38
Number of pages9
JournalKSME International Journal
Issue number1
Publication statusPublished - 2000 Jan
Externally publishedYes


  • CTOD
  • Crack driving force
  • Dissimilar joint
  • J-integral
  • Strength mismatch

ASJC Scopus subject areas

  • Mechanical Engineering


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