Paper Title:
Effect of Dent on Self-Sensing Method of CFRP
  Abstract

Authors’ group has been done researches on the damage monitoring of the laminated Carbon Fiber Reinforced Plastic (CFRP) using the electrical resistance change method. The method adopts reinforcement carbon fibers as sensors, and it is called self-sensing method. Using thin CFRP laminates, delamination crack location and dimension are identified with the electrical resistance change method. However, the electrical resistance decreases when a delamination crack is made in a thick CFRP beam. The present paper experimentally investigates the effect of the dent for the measurements of electrical resistance change. Indentation tests are performed for the thick CFRP plates. The effect of the dent is calculated compared with the effect of piezoresistivity caused by the residual stress relief. As a result, the effect of the dent is larger than the effect of the residual stress relief for the thick CFRP. For the thick CFRP, dents cause the significant reduction of the electrical resistance in the thickness direction, and that causes electrical resistance decrease.

  Info
Periodical
Advanced Materials Research (Volumes 123-125)
Edited by
Joong Hee Lee
Pages
963-966
DOI
10.4028/www.scientific.net/AMR.123-125.963
Citation
A. Todoroki, R. Matsuzaki, Y. Samejima, Y. Hirano, "Effect of Dent on Self-Sensing Method of CFRP", Advanced Materials Research, Vols. 123-125, pp. 963-966, 2010
Online since
August 2010
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Price
$32.00
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