Steve serves as Senior Editor of Machine Design. He has 23 years of service and has a B.S. Biomedical Engineering from Steve was a Flight officer in the U.S. Navy. He is currently responsible for areas such as aerospace and medical.
A motor is the mechanical or electrical device that generates the rotational or linear force used to power a machine. A drive is the electronic device that harnesses and controls the electrical energy sent to the motor.
Engineers from the Pacific Northwest National Laboratory (PNNL) have improved friction stir welding (FSW) so that it can now join aluminum sheets of varying thicknesses, a key capability for making welds that are strong in places where needed, yet light overall.