Determination of the accuracy of non-destructive residual stress measurements methods

Abstract

Sophisticated measurement methods are currently used extensively to determine the residual stresses in materials. The capabilities of the Hole-Drilling Method, Debro-30 Ultrasonic System and Digital Shearography to determine residual stresses have been explored. The accuracy of these techniques in measuring residual stresses in mild steel specimens is thoroughly examined and discussed. The results obtained from the experiments are consistent with the expected outcomes. Related literature review, experimental procedures, results and their discussion have been outlined. It is hoped that the information provided in this thesis will be of importance to end users, especially engineers and technologists who use these non-destructive methods to evaluate residual stresses in components and materials.