In the structural integrity assessment based on existing BS 7910 code, the residual stress near the weld metal is very conservatively calculated and applied as the yield strength level based on the empirical equation of BS 7910 code. However, when a p...
In the structural integrity assessment based on existing BS 7910 code, the residual stress near the weld metal is very conservatively calculated and applied as the yield strength level based on the empirical equation of BS 7910 code. However, when a plate is welded, cooling and cut, the residual stress is re-distributed, resulting in a lower level of residual stress than the existing value. This study predicts J-integral at crack tip by considering the redistributed residual stress according to the cutting methods. This study also proposes a reasonable method to reduce a conservatism of the existing ECA (Engineering critical assessment).