SEDL / STP / STP1059-EB / STP24117S


A Criterion for Mixed-Mode Matrix Cracking in Graphite-Epoxy Composites

Binienda, W
University of Akron, Akron, OH

Wang, ASD
Drexel University, Philadelphia, PA

Zhong, Y
Drexel University, Philadelphia, PA

Reddy, ES
Drexel University, Philadelphia, PA


Pages: 14    Published: Jan 1990


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Abstract

In this paper, mixed-mode matrix fracture in graphite-epoxy composites was studied. Experimental investigation was conducted on a family of doubly side-notched unidirectional off-axis specimens. By varying the notch depth and the off-axis angle, a total of 28 fracture conditions of differing mixed-mode ratios were produced. Fracture analysis of the test data suggested that the total strain energy release rate is a suitable material condition for mixed-mode matrix cracking in graphite-epoxy composites.


Keywords:
composite materials, graphite-epoxy, mixed-mode matrix fracture, strain energy release rates, finite-element analysis, mixed-mode fracture criterion

Paper ID: STP24117S
Committee/Subcommittee: D30.07
DOI: 10.1520/STP24117S
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