散逸エネルギ測定に基づくガセット溶接継手に対する破壊箇所予測

抄録

Dissipated energy measurement was applied to prediction of crack initiation point for gusset weld joint. When measuring the dissipated energy against gusset weld joint, the temperature difference between the bead and the flat part is measured as temperature fluctuation. In order to accurately measure dissipated energy against gusset welded joint, it was found to be necessary position correction and mean filter. It was to investigate the relationship between the dissipated energy measurement result and crack initiation. As a result, Dissipated energy intensive part in N/N_f=0.018 was mostly consistent with the crack initiation.