US Patent Issued to JFE STEEL on May 5 for "Wrinkle generation determination index acquisition method, wrinkle generation determination method, wrinkle generation determination device, and wrinkle generation determination program for press formed part" (Japanese Inventor)

ALEXANDRIA, Va., May 5 -- United States Patent no. 12,618,758, issued on May 5, was assigned to JFE STEEL Corp. (Tokyo).

"Wrinkle generation determination index acquisition method, wrinkle generation determination method, wrinkle generation determination device, and wrinkle generation determination program for press formed part" was invented by Yuki Ogihara (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A wrinkle generation determination method for a press formed part includes acquiring, for each load ratio in in-plane biaxial directions, a relationship between an in-plane biaxial strain generated in a process of inducing out-of-plane buckling in a measurement part and a load, acquiring an in-plane bi...