Proceedings of Fatigue Crack Paths (FCP 2003), Parma, Italy 2003

alloy amplitude analysis angle behaviour bending calculated components compressive crack closure crack depth crack extension crack front crack growth rate crack length crack surface crack tip criterion curve cyclic loading da/dN direction displacement ductile ductile iron effect elastic Engng equation fatigue crack growth fatigue crack path fatigue crack propagation fatigue limit fatigue strength fatigue tests Figure finite element fish eye Fract fracture mechanics fracture surface fracture toughness geometry grain boundaries increment initial crack investigated kinking Kmax linear linear elastic loading conditions martensite material maximum Mech method microscope microstructure mixed mode mixed-mode MPa√m notch number of cycles observed obtained parameters plane plastic plate prediction pure Mode range ratio residual stress shear lips shear stress shot peening shown in Fig simulation specimen stage steel strain energy stress concentration stress field stress intensity factor striation structure tensile torsion weld zone