Japan, Feb. 27 -- NIPPON STEEL CORP has got intellectual property rights for 'METHOD FOR ESTIMATING SPOT WELDING JOINT PERFORMANCE.' Other related details are as follows:
Application Number: JP,2022-072009
Category (FI): G01N3/00@Q,G06F30/23
Stage: PROBLEM TO BE SOLVED: To accurately estimate the relation between initial crack depth and joint strength in a spot welding joint.SOLUTION: A method for estimating spot welding joint performance comprises: a process of deriving the relation between an initial crack depth or a nugget diameter and joint strength, which derives a joint strength limit line and a joint strength estimation line without initial cracks, by the finite element method analysis for a tensile condition of the spot welding joint; a joint condition input process of inputting a welding nugget diameter and/or the initial crack depth of a spot welding joint to be evaluated; and a joint performance estimation process of applying the welding nugget diameter and/or the initial crack depth input in the joint condition input process to the joint strength limit line and the joint strength estimation line without initial cracks, and of estimating the limit of the initial crack depth that does not affect the joint strength and/or the limit of the welding nugget diameter that does not affect the joint strength.SELECTED DRAWING: Figure 1 (Grant)
Filing Date: April 26, 2022
Publication Date: July 4, 2023
The original document can be viewed at: https://www.j-platpat.inpit.go.jp/p0100
Disclaimer: Curated by HT Syndication.
