Fatigue damage evolution in woven fabric composites
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abstract
Fatigue testing of 5-harness satin woven laminates indicates damage in the form of matrix cracking in transverse bundles and internal delamination at the tip of these cracks. These damage entities reduce the overall elastic properties of the laminate. The woven laminate is modeled by approximating it to an equivalent cross-ply laminate. The evolution of cracks during constant amplitude fatigue loading is explained by modeling both the cracks and internal delamination and assuming frictional stresses at the delaminated interface.