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:
Feb. 13, 2024
Filed:
Jul. 02, 2020
Method for evaluating crack in metal member and method for evaluating fatigue damage in metal member
Mitsubishi Power, Ltd., Kanagawa, JP;
Hiroaki Fukushima, Tokyo, JP;
Yuichi Hirakawa, Tokyo, JP;
Hiroaki Yoshida, Yokohama, JP;
Masahiko Yamashita, Yokohama, JP;
Takeo Tokumoto, Yokohama, JP;
MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo, JP;
Abstract
A method for evaluating a crack in a metal member comprises a first removal step (S) and a second removal step (S). In the first removal step (S), a step for electrolyzing a metal member having an oxide scale formed on a surface thereof, a step for acquiring an image of the oxide scale as a first image, and a step for determining whether or not a scale crack has occurred are repeated until occurrence of a scale crack is determined. In the second removal step (S), a step for electrolyzing the metal member having the scale crack, a second image acquisition step for acquiring an image of the oxide scale as a second image, and a second determination step for determining whether or not the scale crack has disappeared are repeated until disappearance of the oxide scale is determined.