Affiliations: [a] Graduate School of Engineering, Osaka University, 2-1,
Yamadaoka, Suita, Osaka 565-0871, Japan
Correspondence:
[*]
Corresponding author: Shiro Kubo; Department of Mechanical
Engineering and Systems; Graduate School of Engineering, Osaka University, 2-1,
Yamadaoka, Suita, Osaka 565-0871 Japan; Tel.: +81 6 6879 7304; Fax: +81 6 6879
7305; E-mail: kubo@mech.eng.osaka-u.ac.jp
Abstract: The electric potential CT (computed tomography) method proposed by
the present authors was applied to the identification of delamination defect in
layered carbon fiber reinforced plastics (CFRP) composites, which have strong
anisotropy in electric conductivity. The electric potential readings on the top
surface of the layered composite materials was used for the identification. The
anisotropy of the electric conductivity of each layer was taken into account in
the boundary element calculations of electric potential distribution. Numerical
simulations were made on the identification of elliptical delaminations on the
interface of layers. It was found that the method was applicable for the
estimation of the location and size of delamination even in the presence of
considerable measurement noise.
