Journal of Composite Materials · 1992 · 24 citations · 12 references
Natural SciencesMaterials EngineeringMaterials ScienceMechanical Behavior Of MaterialsStructural EngineeringStructural MaterialsComposite MaterialsComposite StructuresFracture MechanicsShear PropertiesShear StrengthStress-strain BehaviorComposite Failure CriterionComposite Failure MechanismsFailure Criteria For CompositesLaminate TheoryLamination TheoryShear Properties Of CompositesShear StressStress-induced Failure
Interlaminar shear stresses in balanced and symmetric laminates with free edges and failure due to these stresses were studied. It was shown that the average in terlaminar shear stress τ xz near the free edge is linearly related to the mismatch of the extension-shear coupling of the top and bottom sublaminates separated by the interface of interest. A simple failure criterion based on the mismatch of the extension shear coupling was introduced to predict laminate failure stress and strain. The validity of this criterion was verified by experiments using AS4/3501-6 graphite/epoxy composite laminates.
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