公开(公告)号：US11559848B2

公开(公告)日：2023-01-24

申请号：US16857373

申请日：2020-04-24

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Tingting Zhang ,  Spyros P. Mellas ,  Kangping Wang

IPC: B23K9/095 ,  B23K31/02 ,  G01N3/08 ,  G01N3/02 ,  B23K31/12

Abstract: Methods are provided for joint performance validation and include preparing a coupon from a blank by bending the blank to have a pair of legs disposed at substantially ninety degrees relative to each other. Another coupon is prepared by forming an opening in a segment of another blank and bending the segment approximately ninety degrees. The segment is disposed adjacent an end of the second blank. A test sample is prepared by joining the coupons together at a joint with a leg attached to the segment approximately at a center of the leg. The test sample is subjected to a force test to generate data for the performance validation.

公开(公告)号：US20210331265A1

公开(公告)日：2021-10-28

申请号：US16857373

申请日：2020-04-24

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Tingting Zhang ,  Spyros P. Mellas ,  Kangping Wang

IPC: B23K9/095 ,  B23K31/02 ,  B23K31/12 ,  G01N3/08 ,  G01N3/02

Abstract: Methods are provided for joint performance validation and include preparing a coupon from a blank by bending the blank to have a pair of legs disposed at substantially ninety degrees relative to each other. Another coupon is prepared by forming an opening in a segment of another blank and bending the segment approximately ninety degrees. The segment is disposed adjacent an end of the second blank. A test sample is prepared by joining the coupons together at a joint with a leg attached to the segment approximately at a center of the leg. The test sample is subjected to a force test to generate data for the performance validation.

公开(公告)号：US20230373024A1

公开(公告)日：2023-11-23

申请号：US17663928

申请日：2022-05-18

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Zhenke Teng ,  Tingting Zhang ,  Andrew C. Bobel ,  Jason M. Brown

IPC: B23K11/18 ,  B23K11/11 ,  B23K11/16

CPC classification number: B23K11/185 ,  B23K11/115 ,  B23K11/163 ,  B23K2103/10

Abstract: Methods for resistance welding, resistance-welded assemblies, and vehicles including resistance-welded assemblies are provided. The method includes providing a workpiece stack-up including first and second workpieces and an intermediate material located between the faying surfaces thereof. At least one of the first workpiece and the second workpiece is formed of a first metal alloy with a first concentration of an alloying element, and the intermediate material is formed of a second metal alloy of the first metal and a second concentration of the alloying element that is less than the first concentration. The method includes bringing electrodes into contact with the workpieces, passing an electrical current therebetween to form a molten weld pool, and cooling the molten weld pool into a weld nugget that forms all or part of a weld joint between the workpieces and has a composition that is a mixture of the workpieces and the intermediate material.