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:
Apr. 26, 2022
Filed:
Nov. 14, 2018
Jfe Steel Corporation, Tokyo, JP;
Takahiro Sakimoto, Tokyo, JP;
Tsunehisa Handa, Tokyo, JP;
JFE Steel Corporation, Tokyo, JP;
Abstract
Provided is a method for evaluating brittle crack arrestability of a steel plate by using a large test piece, in which a notch is disposed on one edge in a central portion, in which an embrittled region having a predetermined length L is formed at a tip of the notch or formed so as to include the tip, and in which a fusion zone spaced from the embrittled region is disposed. The fusion zone is formed on one side or both sides of the embrittled region at a distance d from the embrittled region, where d is determined in relation to a thickness t of the steel plate, and a length of the fusion zone is determined by adding ΔL1 (0.3L to −0.3L) to a length L of the embrittled region and by subtracting ΔL2 (0 to 0.4L) from the length L.