The effect of fibre orientation on a TWCP composite

[摘要] Multiple authors have shown that orientation can greatly affect the shock profiles seen in composites. Carbon fibre composites are employed in multiple sectors, with their use in the aerospace industry becoming more prevalent. An angle of 20°between the outer surface and the weave direction has been shown to provide a good compromise between strength and ablation, making orientation an important property. Using a single stage gas gun with manganin pressure gauges the shock response of both a 90°and 45°layup TWCP composite was investigated up to a particle velocity of approximately 1 mm μs-1, in both the Us-up and pressure-volume planes. Comparisons in terms of shock propagation were also made with a previously investigated TWCP orientation of 0°. This allowed a detailed interrogation of the effects of weave orientation in this important TWCP composite to be made. It was found that the shock response was not greatly altered by orientation of the carbon fibre weave above a certain particle velocity. This was due to the 90°behaving elastically until a particle velocity of 0.6 mm μs-1. Above this value the experimental data had very little deviation regardless of the angle.

[发布机构] AWE, Aldermaston, Reading; RG7 4PR, United Kingdom^1;Cranfield University, Cranfield Defence and Security, Shrivenham, Swindon; SN6 8LA, United Kingdom^2;School of Engineering and Information Technology, University of New South Wales, UNSW Canberra, PO Box 7916, Canberra; BC; 2610, Australia^3

[关键词] Carbon fibre composites;Fibre orientation;Manganin pressure gauges;Multiple authors;Particle velocities;Pressure volumes;Shock profiles;Shock propagation