Fracture Mechanics

aluminium alloys analysis ASTM behaviour bibliography blunting brittle chapter cleavage COD design curve concept crack arrest crack extension crack front crack growth rate crack propagation crack tip plastic cyclic plastic zone da/dn decrease determined discussed in section dislocation ductile dynamic effect elastic stress elastic-plastic elliptical surface EPFM equation experimental fast fracture fatigue crack growth Fatigue precracking Fracture Mechanics fracture surface fracture toughness grain boundary hydrogen embrittlement increase instability intergranular fracture Jic test K₁ Kith LEFM liquid metal embrittlement load-displacement material maximum method microstructure microvoid coalescence mode notch nucleation obtained occurs plane strain plane stress plastic deformation plate predict R-curve reference region shear shown in figure slip plane specimen thickness stable crack growth stress corrosion cracking stress field stress intensity factor structural sustained load fracture titanium alloys transgranular variable amplitude loading yield strength Δα ΔΚ σ σ σπα ди