Fundamentals of Fracture Mechanics

ahead alloys antiplane applied stress axes behaviour bend boundary brittle calculated carbide cleavage fracture components constant crack extension crack growth crack length crack propagation crack tip criterion critical value curve deformation dislocations ductile effect elastic/plastic equation experimental factor failure fast fracture fatigue crack fibrous fracture fracture mechanics fracture stress fracture toughness geometry given grain growth rate hole increase initiation intensification linear elastic material material's matrix maximum mild steel Mode notch root notched bars obtained occur opening displacement particles plane strain plane stress plastic flow plastic strain plastic zone pop-in produce radius region relationship Section shear lips shear stress shown in Figure situation slip-band slip-line field square fracture strain energy stress concentrator stress distribution stress function stress intensity tensile stress tension testpiece transition temperature u₁ u₂ voids work-hardening x₁ yield load yield stress Young's modulus zero πα