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Drilling carbon fibre reinforced plastics (CFRPs) is typically cumbersome due to high structural stiffness of the composite and low thermal conductivity of plastics. Resin-rich areas between neighbouring plies in a laminate are prone to drilling-induced delamination that compromises structural integrity. Appropriate selection of drilling parameters is believed to mitigate damage in CFRPs. In this...
This paper presents a study of the effect of randomness in distribution of matrix cracks in [0 m /90 n /0 m ] carbon fibre–epoxy laminates. In contrast to standard approaches based on the unit cell (representative volume element), various crack distributions are introduced directly into finite element models. Magnitudes of crack spacings in 90° layers are taken from tensile...
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