Abstract
Carbon fiber reinforced polymer, CFRP, plate bonding method is one of the new crack repair methods. The effect of fatigue life extension by bonding CFRP plate can be estimated by using stress intensity factor, SIF. In this study, to clarify the effect fatigue life extension of edge crack by bonding CFRP plate under axial load, tensile fatigue tests were carried out. Furthermore, to evaluate the effect of fatigue life extension by bonding CFRP plate, stress intensity factor, SIF, of a cracked steel plate with CFRP plates was calculated by finite element analysis and simple calculation procedure based on linear fracture mechanics. Finally, crack propagation analysis were carried out and analysis results compared with test results.
