抄録
J-integrals on test panels with artificial surface cracks were measured by means of strain-gauges glued along integration paths under uniaxial loadings. Results were examined by those of finite element calculations and a normalized J-integral design curve was formulated. The proposed design curve was compared with existing safety assessment standards and shown its suitability. The J-integral design curve taken into consideration welding residual stresses would conservatively assess the integrity of metal canister weldments.
