SYMPOSIA PAPER Published: 01 January 1990

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


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.

Author Information

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
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Developed by Committee: D30
Pages: 287–300
DOI: 10.1520/STP24117S
ISBN-EB: 978-0-8031-5120-8
ISBN-13: 978-0-8031-1287-2