Detection of Fatigue Damage by the Use of Position-Sensitive Detector

Singularity of Change in X-Ray Diffraction Profile

Abstract

Fatigue damage was detected by X-ray, using a position-sensitive detector, and these data were compared with the data obtained by a usual X-ray stress measuring apparatus.
It was noticed that the change of half value breadth of diffraction X-ray during the fatigue process depended on stress and materials. The values of change measured by a position-sensitive detector were several times as large as those by a usual X-ray stress measuring apparatus.
It is found that this difference is due to the singularity of the change in distribution of diffraction X-ray intensities during the fatigue process.