Effects of ply sequence of adjacent plies on the determination of delamination fracture toughness in carbon/epoxy composites
This paper presents an experimental study on the interlaminar fracture toughness in Mode I of each lay-up under quasi-static condition. Experimental results show that the measured Mode I interlaminar fracture toughness in terms of critical strain energy release rate, GIc at the crack initiation increases with both adjacent and sub-adjacent ply angles. The R-curve plateau values increases with the ply angle of adjacent plies
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