Residual Stress Measurement of Multi-Layered Plate by X-Ray Method

Abstract

The authors propose two theories of the Front Surface Method and the Back Surface Method on residual stress measurement in the whole cross section of a multilayered plate by X-ray. In a multilayered plate composed of two or more plate elements of different material, a standard temperature of measurement must be expressed clearly because of being affected by thermal stress caused by temperature change. The authors derive a stress compensation coefficient. As application of the new theories, the residual stress distributions in a Cr-electrodeposited two layered plate and a bimetal plate are measured by the Front Surface Method and the practicability of the theory is confirmed.