Incorporation of Evaluation Technology into Shot Peening Equipment

摘要

Shot peening is one of surface enhance method and is used in the automotive industries and aerospace industries. The compressive residual stress induced by shot peening greatly improves the fatigue strength. Also, it is been important to induce compressive residual stress from the surface to the inside in order to improve the fatigue strength. Therefore, it is important to understand the residual stress distribution of the products. In general, product evaluation in the shot peening process is destructive inspection by sampling. From the viewpoint of quality control, product evaluation of shot peened products should be 100% inspection. Furthermore, it is best to be able to evaluate from the surface to the inside. Therefore, we propose the inspection system for shot peening in production site. We report the features of inspection method in this system and the examination results assuming inspection of production line.