Influence of Ultrasonic Vibration on Longitudinal Critically Refracted (Lcr) Wave Acoustoelastic Coefficient for Evaluating Coating Stress

Stress control was very important for the application of laser cladding technology, but there was still not an effective method at present, so a stress control method, including longitudinal critically refracted (Lcr) wave method and ultrasonic vibration method, was proposed, but its correlation was still not clear. Therefore, based on the longitudinal critically refracted (Lcr) wave acoustoelastic theory, the ultrasonic vibration effect on Lcr wave acoustoelastic coefficient of laser cladding coating was discussed. In this study, laser cladding coatings applied with 0, 10, 50 and 90