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The fracture toughness for first matrix cracking of a unidirectionally reinforced carbon/carbon composite material

Published online by Cambridge University Press:  31 January 2011

Tatsuya Miyajima  and
Mototsugu Sakai
Tatsuya Miyajima
Affiliation:
Department of Materials Science, Toyohashi University of Technology, Tempaku-cho, Toyohashi 441, Japan
Mototsugu Sakai
Affiliation:
Department of Materials Science, Toyohashi University of Technology, Tempaku-cho, Toyohashi 441, Japan
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Abstract

The fracture toughness for first matrix cracking of a uniaxially reinforced C-fiber/C-matrix composite is investigated using a modified controlled surface flaw method. The theoretical models for first matrix cracking of brittle matrix composites including the stress intensity and the potential energy approaches are reviewed in the light of the experimental results. The sharing of the applied load between the reinforcing fibers and the brittle matrix along with extensive crack front debonding enhance the fracture toughness for first matrix cracking.

Type
Articles
Information
Journal of Materials Research , Volume 6 , Issue 11 , November 1991 , pp. 2312 - 2317
Copyright
Copyright © Materials Research Society 1991

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