In this study, stress measurements were performed using a double exposure method with hard synchrotron monochromatic X-rays, and its validity was proved. The diffractions of the shrink-?tted ring of austenitic stainless steel SUS304 were measured by the CdTe pixel detector. The used X-rays were 70, 80 and 90 keV. The measured stress distributions with the 311 diffraction of γ-Fe corresponded to the predicted result. In addition, The stress distribution of the shrink-?tted ring was measured by the CCD camera...
英字タイトル:
Stress Measurements of Austenitic Stainless Steel using Hard Synchrotron X-Rays

A method for an X-ray stress measurement can be classified into the method to determine the orientation angles for measuring the diffraction peak and the method to determine the optimum stress values. In this study, a new method for an X-ray stress measurement using an area detector is proposed and is named ”direct method”. In the direct method, the diffraction ring due to the incident X-ray beam normal to the specimen surface is used. The optimum stress values are determined by a simplex method as a k...
英字タイトル:
A New Method for X-Ray Stress Measurement Using Area Detector

X-Ray diffraction spots from coarse grains of austenitic stainless steel, SUS316L, were measured with an area detector. The error of the measurement of the diffraction angle was investigated.“ -method ”was proposed to solve the error due to the position of the coarse grain. However, the -method was not effective in solution of the error. A double-exposure method (DEM) was proposed as the measurement without error due to the position of the coarse grain. The DEM did not solve the error due to the divergen...
英字タイトル:
A Study on Strain Measurement of Coarse Grains Using X-Ray Area Detector