Effect of thickness on the relationship between shear lip and energy in dynamic tear specimens

Abstract In two previous papers, a relationship was shown to exist between the fracture energy and shear lip in 16–25 mm thick dynamic tear (DT) tests of quench and tempered carbon and low alloy steels and their weldments over a wide range of temperatures, compositions and locations in the weldments. The relationship between shear lip and energy was found to be independent of specimen thickness for the 16–25 mm thicknesses. In this paper it will be shown that the relationship holds for 7–15 mm thicknesses as well. Data used in these studies have been acquired from samples of 350 WT, A517 Grade F, HY80, HY100 and HLES steels and submerged arc, shielded metal arc, flux cored arc and gas metal arc welds of these steels.