Smart Structure for Detection of Embedded Delamination of Quasi-Isotropic CFRP Laminated Plate Using Electric Resistance Change

In the present study, an electric resistance change method is employed for the identifications of location and size of the embedded delaminations of quasi-isotropic laminates. Indentation tests are conducted to create embedded delamination cracks in the quasi-isotropic laminate of CFRP. Two lines and five columns of electrodes are mounted on the plate surface for measurements of electric resistance changes due to delamination creations. Response surface methodologies are applied to obtain the relation between the delaminations and measured electric resistance changes. As a result, the method can successfully estimate the location and size of embedded delaminations of quasiisotropic laminates, and the effect of the stacking sequence for identification is clarified.