ABSTRACT
Brittle debonding at adhesive ends may occur when carbon fiber reinforced plastic (CFRP) bonded steel members are subjected to high stress or large deformation, such as compressive buckling. Therefore, to prevent CFRP debonding, the use of a highly ductile putty material (elastic putty) between the steel member and the CFRP has been proposed. From the results of the test and analysis, when the elastic putty is inserted or the CFRP bond length is short, the buckling loads given by the eigenvalue analysis tend to be higher than that obtained by the tests or finite element results. This is because the eigenvalue analysis assumes a perfect composite condition of the steel plate and CFRP. Therefore, in this study, the estimation of the elastic buckling load of CFRP-bonded defective steel plates is proposed by using eigenvalue analysis to take into account the effect of transmission delay by adhesives and elastic putty.
