REQUIRED LENGTH AND OPTIMUM STIFFNESS OF MULTIPLE-STEPPED CFRP STRIPS BONDED TO STEEL PLATE

Abstract

  The load when CFRP strips peel off from steel plates, namely debonding load is known to become higher by stepping the CFRP strips. In the previous research, the conditions to maximize the debonding load were provided for the CFRP strips with one step. In this study, they are given for the case of multiple steps by applying the properties that the stress in the middle of the steel plate and the debonding shear stress at the end of the adhesive each converge into a certain value as the length of the CFRP strips are large, to each of the steps of CFRP strips.