Journal
COMPOSITES SCIENCE AND TECHNOLOGY
Volume 70, Issue 4, Pages 553-563Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compscitech.2009.11.023
Keywords
Carbon nanotubes; CFRP; Impact behaviour; Damage tolerance
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Funding
- FP6 EU-STREP
- E.U.-European Social Fund
- Greek Ministry of Development-GSRT
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The goal of the present study was to investigate the influence of multi-wall carbon nanotubes (MWCNTs) on the impact and after impact behaviour of carbon fiber reinforced polymer (CFRP) laminates. About 0.5% per weight MWCNTs were dispersed via a high shear device in the epoxy matrix (Bisphenol A) of carbon reinforced quasi-isotropic laminates. Subsequently, the modified CFRPs were subjected to low-energy impact and directly compared with unmodified laminates. In previous studies, the beneficial effect of the MWCNT inclusion to the fracture properties of CFRPs has been demonstrated. In terms of the CFRP impact performance, enhanced performance for the CNT doped specimens was observed for higher energy levels. However, the after-impact properties and more specifically compression after impact were improved for both the effective compression modulus and the compression strength. In addition, compression-compression fatigue after impact performance of the CNT modified laminates was also improved, by extending the fatigue life. (C) 2009 Elsevier Ltd. All rights reserved.
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