US 10,914,692 B2 · Method for measuring stress

Abstract

A method that measures stress of a test subject including a metal includes: detecting, using a two-dimensional detector, a diffraction ring of diffracted X-rays which is formed by causing X-rays from an irradiation unit to be incident on the test subject and to be diffracted by the test subject; and calculating the stress of the test subject based on detection results during the detection step. Therein, the detection step involves causing X-rays from the irradiation unit to be incident on each of a plurality of sites on the test subject with the irradiation unit angled relative to the test subject in a manner such that the angle of incidence on the test subject is within the range of 5-20°, inclusive, and detecting, using a two-dimensional detector, the diffraction ring formed by the diffraction of the X-rays by the test subject.

Claims8

Dependent claims

A method for measuring stress in a target object composed of a metal, the method comprising:

causing X-rays to be incident on the target object from a radiation unit capable of radiating the X-rays and detecting, using a two-dimensional detector, diffraction rings of diffracted X-rays generated as the X-rays are diffracted from the target object;
and
calculating the stress in the target object on a basis of a result of the detecting,
wherein, in the detecting, the X-rays are caused to be incident on a plurality of parts of the target object from the radiation unit with the radiation unit angled relative to the target object such that an incidence angle of the X-rays on the target object falls within a range of 5° to 20° and the two-dimensional detector detects the diffraction rings generated as the X-rays are diffracted from the target object.

1 more element

Dependencies are inferred from the claim text.

Method for measuring stress

Life of this patent

Method for measuring stress

Life of this patent

Abstract

Claims8