Effect of interfacial zone on mechanical behavior and failure of fiber-reinforced composites

J. D. Achenbach*, H. Zhu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

326 Scopus citations


The mechanical behavior of the interphase between fibers and matrix is modeled by continuity of tractions, and a linear relation between displacement differences across the interphase and the conjugate tractions. The proportionality constants characterize the stiffness and the strength of the interphase. By the use of this model, and for transverse loading of a rectangular-array fiber-reinforced composite, numerical results have been obtained for the stresses in the matrix and in the fibers. Variation of the interphase parameters causes pronounced changes in these stress distributions. The initiation, propagation and arrest of interphase cracks have been analysed based on a criterion of critical strain energy density in the interphase. The results have also been used to display the effect of the interphase parameters on the overall elastic moduli of the composite, prior as well as subsequent to the development of interphase cracks.

Original languageEnglish (US)
Pages (from-to)381-393
Number of pages13
JournalJournal of the Mechanics and Physics of Solids
Issue number3
StatePublished - 1989

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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