Stage character of multilevel fatigue cracking as a rotational nonlinear autowave process
The multilevel approach of physical mesomechanics was used to study the mechanism of fatigue cracking in a surface layer of a flat specimen under alternate bending. It is shown that the incompatibility of channeled plastic shear in the surface layer and accommodated elastic deformation in the base material governs the evolution of fatigue cracking as a rotational nonlinear autowave process.