Study on Brittle Crack Propagation and Arrest Behavior in Plates and Beams Structure (2nd Report)

Dynamic Fracture Toughness of Ship Hull Steels

Abstract

In this report, the dynamic fracture toughness K_D defined by the dissipated energy was obtained, as to several common ship hull steels.
Using the double tension type large size specimen, crack propagation test was made and the crack velocity was measured. By this results, dynamic fracture toughness K_D was calculated using dynamic numerical analysis. So that, the expression on K_D was experimentally obtained and the crack propagation characteristics were compared.