The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 04, 2025
Filed:
Apr. 22, 2021
Kobe Steel, Ltd., Kobe, JP;
Kobe Steel, Ltd., Kobe, JP;
Abstract
A method measuring a residual stress of a fillet portion, where an angle of incidence of X-rays denoted by Ψ [°], a fillet radius denoted by R [mm], a fillet angle denoted by θ [°], a vertical width of a housing of an X-ray stress measuring apparatus denoted by W [mm], a width of a detection region of a two-dimensional detector denoted by D [mm], a complementary angle of a Bragg angle denoted by η [°], and an interval between a flange portion and an imaginary straight line which passes through a fillet center and is parallel to the flange portion denoted by a [mm], formula 1 is satisfied; when Ψ≥0, an irradiation distance L [mm] of the X-rays, the irradiation distance L satisfies formula 2; and when Ψ<0, the irradiation distance L satisfies formula 3. 1