A New Merit Function for Evaluating the Flaw Tolerance of Composite Laminates. Part 2; Arbitrary Size Holes and Center Cracks
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In a previous paper, a new merit function for determining the strength performance of flawed composite laminates was presented. This previous analysis was restricted to circular hole flaws that were large enough that failure could be predicted using the laminate stress concentration factor. In this paper, the merit function is expanded to include the flaw cases of an arbitrary size circular hole o
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In a previous paper, a new merit function for determining the strength performance of flawed composite laminates was presented. This previous analysis was restricted to circular hole flaws that were large enough that failure could be predicted using the laminate stress concentration factor. In this paper, the merit function is expanded to include the flaw cases of an arbitrary size circular hole or center crack. Failure prediction for these cases is determined using the point stress criterion. An example application of the merit function is included for a wide range of graphite/epoxy laminates.Martin, Mikulas M., Jr. and Sumpter, RodLangley Research CenterSTRESS CONCENTRATION; LAMINATES; FAILURE ANALYSIS; HOLES (MECHANICS); NONDESTRUCTIVE TESTS; PREDICTIONS; DEFECTS; CRITERIA; CRACKS; GRAPHITE-EPOXY COMPOSITES...
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