Calculation of stress intensity factors for curved cracks in anisotropic FGMs

Jui Hung Chang, Dah Suen Tang

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


A combined analytical and numerical method is proposed for computation of mixed-mode stress intensity factors (SIFs) for arbitrary curved cracks in anisotropic functionally graded materials (FGMs). By developing a pair of closed-form expressions that relate the SIFs and the Jk-integrals, it is anticipated that the SIFs can be properly extracted should the J k-integrals be accurately evaluated. To this end, a novel method for calculating the Jk-integrals is presented and has proved reasonably accurate in numerical computations. Since neither a priori information nor extra auxiliary solutions corresponding to the singular behavior is required, this proposed scheme appears to be applicable to problems containing arbitrary shapes of curvature in generally anisotropic FGMs.

Original languageEnglish
Pages (from-to)1045-1058
Number of pages14
JournalJournal of the Chinese Institute of Engineers, Transactions of the Chinese Institute of Engineers,Series A/Chung-kuo Kung Ch'eng Hsuch K'an
Issue number8
StatePublished - 1 Dec 2013


  • anisotropic FGM
  • curved crack
  • mixed-mode SIFs
  • modified Jk-integrals


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