... that, in fracture testing using a finite size specimen, if the crack tip is too close to the boundary, the displacement or stress loading may yield different K I results. To overcome this problem, Kibler and Roberts [ 3 ] used cruciform specimen to study the biaxial effect on fracture behavior. Indeed, using...

... single-edge bending and compact tension specimens for different hardening materials. It is followed by an experimental evaluation using actual fracture test data for HY80 steel. The results show that the proposed incremental J-integral equations can obtain much improved results of J-R curves for larger...