Multiple fracture of fiber-reinforced brittle matrix composites based on micromechanics

S. H. Li*, Z. Li, T. Mura, S. P. Shah

*Corresponding author for this work

Research output: Contribution to journalArticle

16 Scopus citations

Abstract

This paper presents a study of a crack in a semi-infinite brittle matrix reinforced with continuous fiber by incorporating a micromechanical model. In general, fibers sustain the extension of a crack in three different phenomena: bridging, debonding, and sliding along the fiber-matrix interface. The spacings between successively developed cracks are derived by the maximum stress criterion in the matrix; in the meantime, the bridging stress and the factor of sliding are determined by using the inclusion method. The stability and growth of matrix cracking in a semi-infinite, fiber-reinforced composite are described by means of the energy approach. The responses of multiple fracture corresponding to stress-strain curves have also been presented. Finally, the external stress at the theoretical ending point, beyond which multiple matrix cracking ceases to develop, can be predicted from the theoretical model.

Original languageEnglish (US)
Pages (from-to)561-579
Number of pages19
JournalEngineering Fracture Mechanics
Volume43
Issue number4
DOIs
StatePublished - Nov 1992

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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