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Crack-face fiber bridging: Finite element analysis, analytical model, and experimental result

Published online by Cambridge University Press:  31 January 2011

Jian-Wu Cao  and
Mototsugu Sakai
Jian-Wu Cao
Affiliation:
Department of Materials Science, Toyohashi University of Technology, Tempaku-cho, Toyohashi-shi 441, Japan
Mototsugu Sakai
Affiliation:
Department of Materials Science, Toyohashi University of Technology, Tempaku-cho, Toyohashi-shi 441, Japan
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Abstract

Prior to considering crack-face bridging, the stress/strain-field ahead of the crack tip in the compact tension (CT) geometry is numerically assessed by means of finite element method (FEM). The stress field along the crack line which has a decreasing profile of tensile stresses from the crack tip converts to monotonically increasing compressive stresses toward the back face of the CT specimen via a rotational center. Based on these stress-field analyses, a novel crack-face bridging model for fiber-reinforced brittle matrix composites is presented. The application of the model to the experimental result of a 2D-C/C composite enables one to estimate the crack-face fiber bridging stresses and their distribution profile.

Type
Articles
Information
Journal of Materials Research , Volume 11 , Issue 6 , June 1996 , pp. 1537 - 1544
Copyright
Copyright © Materials Research Society 1996

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