Christopher B Weingart

US Patent:

20110068150, Mar 24, 2011

Filed:

Sep 18, 2009

Appl. No.:

12/562291

Inventors:

John A. Baumann - St. Charles MO, US
Richard J. Lederich - Des Peres MO, US
Michael P. Matlack - St. Charles MO, US
Christopher M. Weingart - St. Peters MO, US
Keith A. Young - St. Peters MO, US

Assignee:

The Boeing Company - Chicago IL

International Classification:

B23K 20/12
B23K 37/04
B21D 31/00

US Classification:

228114, 228 21, 72377

Abstract:

A method of mitigating distortion in a friction stir weld joint as well as an associated friction stir weld assembly for mitigating distortion in a friction stir weld joint are provided. In this regard, a workpiece having a friction stir weld joint and associated distortion may be provided. Force may then be selectively applied to the workpiece along at least a portion of friction stir weld joint. The application of force induces plastic deformation along at least the portion of the friction stir weld joint in order to reduce the distortion of the workpiece. Force may be applied, for example, by moving a roller, such as a hardened cylindrical roller having chamfered edges, along at least a portion of the friction stir weld joint in order to apply a compressive force.