The Investigation on the “X-ray Stress Measurement”

Abstract

To measure the stress by X-ray was proposed in 1930 by G. Sachs and J. Weerts in the case ~f duralumin. Since, in 1935, R. Glocker ascertained the fact that the surface stress is perfectly measurable by means of X-ray, it interested researchers of stress problems and achieved far greater development especially in our country and Germany. “X-ray stress measurement” is excellent in the following points : 1) not only the stress of a test piece but also of machine parts can be measured directly without any additional or harmful working for objects. 2) local stress of objects is more clearly demonstrated as compared with any other method hitherto tried. We personnel performed laboratory experiments using the principle of “X-ray stress measurement”. and examined the results. Moreover, we have designed and produced an “X-ray stress measuring instrument”, which is very convenient for actual use in applying the method beyond the laboratory, and ascertained the possibility of the shop-measurement.