STEP DESIGN FOR CFRP BONDED ONTO STEEL PLATE UNDER UNI-AXIAL LOAD

Abstract

 In the application of CFRP plate onto steel plate, stepping the CFRP plate ends is often used for prevention of debonding of CFRP plates. However, the length of CFRP plate becomes long by using stepped ends. In this study, to shorten the length of CFRP plate, aligning of several CFRP plate ends was proposed and the condition of aligning was theoretically given. Additionally, aligned steps of CFRP plates under uni-axial load were designed. It was confirmed with stress analysis that the stress in steel plate was reduced as design value by bonding CFRP plate with proposed stepped ends.