‘4D printing’

4D printed thermite could make welding in space and combat zones easier, safer

Jul. 20, 2020—A recent mechanical engineering doctoral graduate has created a material for welding in extreme conditions that could minimize equipment needed and operator hazards. The material—a safe, stable, thermite paste—can serve as a portable, programmable heat source for use in space, under water and in combat zones. The paste is 3D-printed and deposited in patterns called...