Abstract—The present study focusses on the parametrical investigation of unidirectional and woven carbon fiber double cantilever beams subjected to mode I, in order to study its effects on their strength and failure. Different crack lengths as well as width and thickness of the specimens have been analyzed extensively. The maximum normal and shear stresses are found to decrease as the crack length increases for both types of composites. The crack length directly affects the strength of the specimens. A numerical model was developed using the Comsol Multiphysics to predict the failure of double cantilever beams. The crack initiation and progression in the specimens was predicted using the cohesive zone method (CZM) and the delamination at the interface.
Keywords—fracture toughness, uni-directional, woven fabric, crack propagation, double cantilever beam.
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