A new fracture mechanics model for multiple matrix cracks of SiC fiber reinforced brittle-matrix composites

T. Okabe, N. Takeda, Jun Komotori, M. Shimizu, W. A. Curtin

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19 Citations (Scopus)

Abstract

A new model is proposed for multiple matrix cracking in order to take into account the role of matrix-rich regions in the cross section in initiating crack growth. The model is used to predict the matrix cracking stress and the total number of matrix cracks. The model converts the matrix-rich regions into equivalent penny shape crack sizes and predicts the matrix cracking stress with a fracture mechanics crack-bridging model. The estimated distribution of matrix cracking stresses is used as statistical input to predict the number of matrix cracks. The results show good agreement with the experimental results by replica observations. Therefore, it is found that the matrix cracking behavior mainly depends on the distribution of matrix-rich regions in the composite.

Original languageEnglish
Pages (from-to)4299-4309
Number of pages11
JournalActa Materialia
Volume47
Issue number17
Publication statusPublished - 1999 Nov 26

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Keywords

  • Brittle fracture
  • Ceramics
  • Composites
  • Fibers

ASJC Scopus subject areas

  • Materials Science(all)
  • Electronic, Optical and Magnetic Materials
  • Metals and Alloys

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