Patent ID: 6094260
Filing Date: 2000-07-25
Classification: B23K,G01B,Y10S

Abstract:
A method for quality control of a laser shock peening process of production workpieces, said method comprising the following steps:(a) producing a first interferometric image of a laser shock peened patch on one of the workpieces, wherein the laser shock peened patch has at least a first laser shock peened surface and a first laser shocked region having deep compressive residual stresses imparted by the laser shock peening extending into the workpiece from the first laser shock peened surface;(b) producing a second interferometric image of the laser shock peened patch while stressing the laser shock peened patch; and(c) producing an image of fringes by overlapping the first and second images and using the image of the fringes for quality assurance of the laser shock peening process of production workpieces.