Ding Xia shaw * teclab.cn Ruitaike (China) Co., LtdSummary:This article introduces a non-contact detection method based on laser ultrasound for the detection and evaluation of residual stresses in materials. Laser ultrasound has the characteristics of numerical accuracy and deeper detection depth in residual stress detection. In addition, due to the advantages of non-contact, non-destructive, broadband, and high precision of laser ultrasound, it is easy to apply in harsh environments such as high temperature and high pressure, and can achieve rapid and real-time detection. It has a wide range of application scenarios in the field of non-destructive evaluation and testing. keyword:Laser ultrasonic residual stress detection Background:Residual stress refers to the internal stress that remains in equilibrium within an object without considering external forces or une...