Interlaminar Fracture Toughness Test: Traditional and Modifiedby William E. Bachrach, Columbia Univ, New York, United States,
Daniel N. Beshers, Columbia Univ, New York, United States,
Abstract: For brittle, transversely isotropic, composite materials we have developed an alternative Mode II interlaminar fracture toughness test (GIIc) that is encompassed within the Mode I experimental interlaminar fracture toughness fixture. For a 32-ply, unidirectional, graphite-epoxy laminate preliminary GIIc values determined from this modified End Notched Flexure Test (MENF) agree well with the traditional ENF test.
Subject Headings: Material tests | Cracking | Toughness | Composite materials | Brittleness | Isotropy | Epoxy
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