Journal
COMPOSITES PART B-ENGINEERING
Volume 76, Issue -, Pages 229-234Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesb.2015.02.025
Keywords
Carbon fibre; Hybrid; Impact behaviour; Mechanical testing; NOMEX (R)
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Composites have been widely used in applications where there is a risk of impact, due to the excellent properties these materials display for absorbing impact energy. However, composites during impact situations typically generate an enormous number of small pieces, due to the energy absorption mechanism of these materials, a mechanism which does not include plastic deformation. This can prove dangerous in sports competitions, where the small fragments of the original structure may harm competitors. This study was designed to explore the possibility of incorporating a material which, whilst maintaining a high level of energy absorption without any plastic deformation mechanism, was able to maintain its original form, or at least significantly reduce the number of pieces generated after impact. The addition of a polyamide layer, NOMEX (R), to a monolithic fabric laminate was investigated in this paper. The process of fabrication is described and the different properties of the material under consideration: interlaminar fracture toughness energy (G(IC).), indentation (id) and delamination after impact (A(i)) and compression after impact (sigma(CAI)), were measured and compared with those of the original monolithic fabric. (C) 2015 Elsevier Ltd. All rights reserved.
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