In situ sensing of impact damage in epoxy/glass fiber composites using percolating carbon nanotube networks

Carbon nanotubes have been dispersed in thick epoxy/plain woven glass fiber composites using a sizing agent. Electrically conductive networks that act as in situ impact damage sensors were provided by the well dispersed carbon nanotubes. Electrical resistance increases with repeated impact loading;...

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Bibliographic Details
Published in:Carbon (New York) 2011-08, Vol.49 (10), p.3382-3385
Main Authors: Gao, Limin, Chou, Tsu-Wei, Thostenson, Erik T., Zhang, Zuoguang, Coulaud, Magali
Format: Article
Language:English
Subjects:
Carbon nanotubes
Cross-disciplinary physics: materials science
rheology
Damage
Dispersion
Exact sciences and technology
Fullerenes and related materials
diamonds, graphite
Glass fiber reinforced plastics
Impact damage
Materials science
Networks
Particulate composites
Physics
Polymer matrix composites
Specific materials
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Summary:Carbon nanotubes have been dispersed in thick epoxy/plain woven glass fiber composites using a sizing agent. Electrically conductive networks that act as in situ impact damage sensors were provided by the well dispersed carbon nanotubes. Electrical resistance increases with repeated impact loading; elastic deformation and damage evolution can be identified from the resistance-change. Correlations between resistance-change, absorbed energy, accumulated acoustic emission counts, and damage area of the composite have been established.
ISSN:0008-6223
1873-3891
DOI:10.1016/j.carbon.2011.04.003