抄録
The purpose of this study is to propose the simple calculation procedure of stress intensity factor of a cracked steel plate repaired with patch plates. In this paper, firstly, stress intensity factor, SIF, of a cracked steel plate with patch plates was calculated by finite element analysis. The effects of SIF reduction of crack repaired with patch plates were assumed as the reduction of nominal stress and the control of crack opening displacement by patch plate. Then, by applying these effects, the SIF of cracked steel plate with patch plates was estimated by a simple calculation procedure. Finally, it was confirmed that the estimated SIF agrees with that given by FE analysis.
