期刊
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
卷 103, 期 -, 页码 1-8出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2017.09.009
关键词
Hybrid; Polymer-matrix composites (PMCs); Fracture toughness; Impact behaviour
资金
- European Commission
- FWO Flanders
- EPSRC [EP/M002500/1]
- Engineering and Physical Sciences Research Council [EP/M002500/1] Funding Source: researchfish
- EPSRC [EP/M002500/1] Funding Source: UKRI
The impact resistance of fibre-reinforced composites is vital in many applications, and can be improved by exploiting synergies in fibre-hybridisation. These effects are however not sufficiently well understood in the literature. Penetration impact tests were hence performed on carbon/glass hybrids, and the results were linked to the flexural behaviour and translaminar fracture toughness. The results revealed large synergetic effects of up to 40% compared to the linear rule-of-mixtures. The results are also the first to reveal that creating a translaminar fracture surface can strongly contribute to the energy absorbed during penetration impact: 56% for an all-carbon fibre composite and 13% for an all-glass fibre composite. These results prove that strategies for maximising the translaminar fracture toughness can also be exploited to maximise the penetration impact resistance of fibre-hybrids. In carbon fibre composites in particular, ply blocking, using larger yarns and introducing micro-cuts should therefore increase the penetration impact resistance. (C) 2017 Elsevier Ltd. All rights reserved.
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