A study of interface fracture criteria by using a cohesive force model

Masaki Omiya, Kikuo Kishimoto

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The aim of this paper is to investigate the mixed mode fracture criteria of an interface crack based on a cohesive interface model proposed by Ma and Kishimoto (1996). The stress intensity factors of an interface crack are influenced by the definition of the characteristic length. By the numerical analysis under the small scale yielding condition, the characteristic length has been related to the crack tip radius. In this study, the mixed mode fracture tests for the various types of adherent specimens were carried out. The mixed mode dependence of the fracture toughness and the fracture boundary curves based on the stress intensity factors were discussed. The material parameters of the Ma-Kishimoto model were decided from the experimental results. This constitutive relation was embedded at the crack tip of the interface and the propagation of the interface crack was simulated by the Finite Element Method. The interface fracture toughness and the interface stress intensity factors obtained by the numerical calculation were in good agreement with the experimental results.

Original languageEnglish
Pages (from-to)1367-1372
Number of pages6
JournalZairyo/Journal of the Society of Materials Science, Japan
Volume51
Issue number12
DOIs
Publication statusPublished - 2002 Dec
Externally publishedYes

Keywords

  • Cohesive force model
  • Fracture criterion
  • Fracture toughness
  • Interface crack
  • Mixed mode
  • Stress intensity factors

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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