Size effects in the Charpy V-notch test

摘要: Issues related to the size dependence of upper shelf energy (USE) and ductile-to-brittle transition temperature (DBTT) in Charpy V-notch test are investigated. Emphasis is placed on interplay between inertial, strain rate hardening, thermal softening material length scale effects. Geometrically similar specimens considered first. For such specimens, found increase with specimen size, amount depending properties. To model available experiments, calculations also carried out for where only ligament varied two classes pipe steels considered. a relatively high strength steel, experimental results exhibit no DBTT. On other hand, significant shift DBTT obtained low steel. The numerical studies used understand difference these steels. extent which effect dependent