RESIDUAL STRESS MEASUREMENT INSTRUMENT AND RESIDUAL STRESS MEASUREMENT METHOD

摘要

PROBLEM TO BE SOLVED: To provide a residual stress measurement instrument and a residual stress measurement method which can reduce the measurement time of residual stress.SOLUTION: The instrument comprises: an X-ray generation source which irradiates a measurement object with X rays; a first detection element which detects an intensity of diffracted X rays of the measurement object in a first detection position; a second detection element which detects an intensity of diffracted X rays of the measurement object in a second detection position different from the first detection position; a moving mechanism which moves the first detection element and the second detection element along a line extending in a direction orthogonal to an incidence direction of the X rays; a movement control unit which drives the moving mechanism to control respective detection positions of the first detection element and the second detection element; and a stress calculation unit which calculates residual stress of the measurement object on the basis of intensity peaks of diffracted X rays respectively detected by moving the first detection element and the second detection element by the moving mechanism.SELECTED DRAWING: Figure 2