Problem 3 β HLAW: into the high load-ratio regime, where plasticity dilutes residual stress (A533B as-welded, β30 β)
Third of four problems on the welded A533B-1 plate: the HLAW specimen β as-welded, warmed to β30 β, with the load raised into the high load-ratio (large-plasticity) regime. We run it in mechCalc's BS 7910 Clause 7 fracture assessment calculator to see how the assessment calls plastic collapse once L_r=1.80 exceeds the cut-off value L_r,max, and why the relative weight of residual stress is diluted by plasticity at high L_r so that fracture toughness becomes the governing factor.