Effect of interfacial fibre orientation and PPS veil density on delamination resistance of 5HS woven CFRP laminates under mode II loading

This paper presents an experimental study on the effect of interfacial fibre orientation and interleaved thermoplastic veil Mode II interlaminar fracture toughness 5-harness satin woven carbon reinforced polymer composite laminates. Three-point End-Notched Flexure tests were carried out to determine delamination resistance, GIIC, specimens with five biases two densities at midplane. Results show that resistance laminates depends layup configurations midplane 90/45 bias exhibiting greatest resistance. The enhancement from polyphenylene sulfide (PPS) interleaves is also dependent but a further increase density 10 gm?2 20 offers little extra benefit. Fracture surface morphologies examined under SEM understand failure mechanism process laminate combined effects density. Fibre relative path, texture misfit, are three main contributors identified for variation 5HS