抄録
The theoretical basis of a relatively simple method for nondestructive evaluation (NDE) of inhomogeneous prestress in materials is proposed. The method is based on utilization of nonlinear effects of simultaneous propagation, reflection and interaction of two ultrasonic waves in the material. The phenomenon of amplification of nonlinear effects by wave interaction is utilized. An algorithms for qualitative and quantitative nondestructive characterization of two-parametric inhomogeneous prestress field in the material with two parallel boundaries is presented.
