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http://dx.doi.org/10.7234/composres.2014.27.6.219

A Study of Damage Sensing and Repairing Effect of CNT Nanocomposites  

Kwon, Dong-Jun (Department of Materials Sciance and Convergence Technology, Engineering Research Institute, Gyeongsang National University)
Wang, Zuo-Jia (Department of Materials Sciance and Convergence Technology, Engineering Research Institute, Gyeongsang National University)
Choi, Jin-Young (Department of Materials Sciance and Convergence Technology, Engineering Research Institute, Gyeongsang National University)
Shin, Pyeong-Su (Department of Materials Sciance and Convergence Technology, Engineering Research Institute, Gyeongsang National University)
Park, Joung-Man (Department of Materials Sciance and Convergence Technology, Engineering Research Institute, Gyeongsang National University)
Publication Information
Composites Research / v.27, no.6, 2014 , pp. 219-224 More about this Journal
Abstract
Nancomposites manufacture has been developed rapidly, because of reinforcing effects of CNT in terms of mechanical, electrical and thermal properties. In this study, 10 wt% CNT paste was fabricated with good dispersion state and easy processability. Damage sensing and reinforcing effect of CNT paste were investigated in nanocomposites. 10 wt% CNT paste exhibited better tensile and flexural properties than those of general 1 wt% CNT nanocomposites. To observe the healing effect of CNT paste, a crack was made artificially with 30wt% CF30wt%/PP composites, and the CNT paste was filled inside the crack. The damage sensing of CNT paste in CF30wt%/PP composites was investigated by electrical resistance measurement and mechanical tests. CNT paste exhibited good reinforcing effect in mechanical properties of CF30wt%/PP composites, and this reinforcing effect was getting better with larger cracks. The reason was because CNT paste had good interfacial adhesion with CF30wt%/PP composites to resist crack propagation. In electrical resistance measurement, there was a jump in electrical resistance signal at the adhesion interface. The jumping signal could be used to predict fracture of CF/PP composites. CNT nanocomposites for damage sensing had crack reducing effect and damage detection using electrical resistance method.
Keywords
paste; carbon nanotube; damage sensing; Interface; nanocomposites;
Citations & Related Records
Times Cited By KSCI : 7  (Citation Analysis)
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