Stability of the friction stir welding process in presence of workpiece mating variations

Edward G. Cole^{a b}, Axel Fehrenbacher^{a b}, Edward F. Shultz^{a b}, Christopher B. Smith^{c d}, Nicola Ferrier^{a b}, Michael Zinn^{a b}, Frank E. Pfefferkorn^{a b}✉

1. ^aUniversity of Wisconsin—Madison, Madison, WI, 53706, USA
2. ^bUniversity of Wisconsin, Madison
3. ^cFriction Stir Link, Inc, Brookfield, WI, 53045, USA
4. ^dFriction Stir Link, Inc
5. ✉Corresponding author