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This paper studies the matrix cracking sequence in [0 2 /90 2 ] s graphite epoxy laminates that contain a small central hole. Experiment was performed first using specimens loaded in uniaxial, quasi-static tension, followed by inspections of the speci men at several prescribed loading increments by means of x-radiography. The inspection provides a quantitative measurement and a physical analysis of matrix cracking patterns near the hole.
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Reddy et al. (1990) studied this question.
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