Journal of Materials Science

, Volume 17, Issue 3, pp 832–842 | Cite as

Prediction of failure modes in unidirectional short-fibre composites

  • Haruo Ishikawa
  • Tsu -Wei Chou
  • Minoru Taya
Papers

Abstract

In short-fibre reinforced composites, penny-shaped cracks often initiate from fibre-ends and propagate into the matrix until they are arrested by the neighbouring fibres. A theoretical study on the prediction of failure modes after the arrest, that is, either the penetration of the crack into the fibres or the debonding of the matrix-fibre interface, is performed. The analytical method used in this study is the extension of the two-dimensional model of Kendall to the three-dimensional crack problem. Strain energy release rates for the initiation of the cracks of the penetration and debonding types are calculated. Also computed are the total potential energy required for a complete penetration of the crack through the fibre diameter and a complete debonding of the matrix-fibre interface. Based on these computations, the failure modes of the crack arrested by the neighbouring fibres are discussed.

Keywords

Polymer Potential Energy Release Rate Failure Mode Energy Release 

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Copyright information

© Chapman and Hall Ltd. 1982

Authors and Affiliations

  • Haruo Ishikawa
    • 1
  • Tsu -Wei Chou
    • 1
  • Minoru Taya
    • 1
  1. 1.Department of Mechanical and Aerospace EngineeringUniversity of DelawareNewarkUSA

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