Fracture resistance curve for single edge notched tension specimens under low cycle actions

This paper investigates monotonic and cyclic fracture behaviors of aluminum alloy 6061-T6511 and analyzes the cause of different fracture behaviors. This study adopts the η approach and a modified η approach to obtain monotonic and cyclic J-R curves respectively. The cyclic loaded SE(T) specimens with zero load ratio have similar J-R curves with monotonically load SE(T). In contrast, a tensile residual stress field at the crack front introduced...