Research Article

Feasibility of Residual Stress Nondestructive Estimation Using the Nonlinear Property of Critical Refraction Longitudinal Wave

Figure 8

(a) Relationship between the relative nonlinear coefficient and prestress when stress increases from 0 MPa to 400 MPa
(b) Relationship between the deformation state and prestress when stress increases from 0 MPa to 400 MPa