Patent 11766738 was granted and assigned to BAE Systems on September, 2023 by the United States Patent and Trademark Office.
A method of friction-stir welding, FSW, a joint J, for example a T joint and/or a lap joint, between a first workpiece W1 and a second workpiece W2, is described. The method comprises: performing a first pass P1 of FSW of the joint J by moving therealong a first tool (