Determining stress intensity factors of composites using crack opening displacement

S. H. Ju, S. H. Liu

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)


The main purpose of this paper is to find the mixed-mode stress intensity factors of composite materials using the crack opening displacement (COD). First, a series solution of the composite material with a crack was used to evaluate COD values. Then, the least-squares method was used to calculate mixed-mode stress intensity factors. This algorithm can be applied to any method that generates or measures COD values. The major advantage of this method is that COD values very near the crack tip are not necessary. Both finite element simulations and laboratory experiments were applied to validate this least-squares method with acceptable accuracy if the even terms of the series solution are removed.

Original languageEnglish
Pages (from-to)614-621
Number of pages8
JournalComposite Structures
Issue number4
Publication statusPublished - 2007 Dec

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Civil and Structural Engineering


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