Several manufacturers consider electromagnetic, or induction, welding a better way to weld highly filled thermoplastics than thermal or friction welding, or using adhesives.

Whether joining two wires together or attaching multiple wires directly to a terminal or assembly, engineers must choose between resistance welding, soldering and ultrasonic welding.

This year marks the 50th anniversary of ASSEMBLY magazine. Since the publication debuted in the late 1950s, we have provided in-depth coverage of key trends, issues and challenges affecting the wide world of welding. Here's a look at how welding technology has changed over the last 5 decades.