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Journal of Nanomaterials
Volume 2015, Article ID 785834, 7 pages
http://dx.doi.org/10.1155/2015/785834
Research Article

Integrated Damage Sensing in Fibre-Reinforced Composites with Extremely Low Carbon Nanotube Loadings

1School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London E1 4NS, UK
2Nanoforce Technology Ltd., Queen Mary University of London, Joseph Priestley Building, Mile End Road, London E1 4NS, UK

Received 17 December 2014; Accepted 13 May 2015

Academic Editor: Nay Ming Huang

Copyright © 2015 Han Zhang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A nanoengineered hybrid composite system has been developed, with integrated damage sensing capabilities at extremely low carbon nanotube (CNT) contents. The employed simple spray coating technique offers good spatial control and the possibility of localized CNT deposition, especially near the fibre/matrix interface, solving traditional problems associated with the incorporation of nanofillers in fibre-reinforced composite laminates such as increased resin viscosity and filtering effects. Moreover, the employed spraying technology has good potential for industrial scale-up. In situ damage sensing based on standard composite tests has been demonstrated for the first time on hybrid glass fibre/CNT composites using extremely low CNT loadings (below 0.1 wt.%) and shows great potential for localized structural health monitoring by controlled CNT deposition into damage prone zones.