Engineers Find a New Way to Punch Holes Through Steel

Electromagnetic pulses (EMPs) are usually associated with warfare. The idea is to use a blast of energy to fry the enemy's computers and telecommunications gear. One common way proposed to do this is with an atomic bomb. In a less extreme fashion, however, EMPs have peaceful uses. They are already employed industrially to shape soft and light metals, such as aluminium and copper. Now a group of researchers at the Fraunhofer Institute for Machine Tools and Forming Technology in Chemnitz, Germany, has found a way to use an EMP device to shape and punch holes through industry's metallic heavyweight--steel. This could transform manufacturing by doing away with the need to use large, heavy presses to make goods ranging from cars to washing machines