Experimental Investigation of Ductile Behaviour and Damage Mechanisms of Woven Composites Under Bending (original) (raw)

Woven composites such as carbon and glass fabric-reinforced polymers (C/GFRPs) laminates are increasingly employed in aerospace structures and sports products. In these applications, they are usually subjected to large-deflection quasi-static and dynamic bending deformations during service. Such loading conditions induce damage within the material at various scale levels affecting their strength, stiffness and energy-absorbing capability. Further, FRPs especially made of carbon fibres are inherently brittle, proven to sudden and catastrophic failure without yielding like ductile materials. For this purpose, mechanical behaviour of woven CFRP and GFRP composites in onand off-axis orientations is first quantified by carrying out large-deflection quasi-static bending tests followed by dynamic ones employing an Izod type impact tester. Both types of laminates of various orientations were tested at loads increasing up to failure to determine their energy-absorbing capability. The obtaine...

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