The Electropuls line of dynamic and static test machines from Instron Corp., Norwood, Mass. (instron.com) uses digital controls to provide state-of-the-art materials testing. The machines handle a variety of tests, including fatigue, compression, tensile, bend, flexure, creep and stress, and impact. The machines' speed range is 100 times that of conventional screw-driven machines and their 60-mm stroke covers most static and dynamic tests. These can also be quasi-static, or cycle specimens at hundreds of times per second. The dynamic and static ranges of the E1000 model are ±1,000 N (± 225 lb) and ±710 N (±160 lb), respectively. The same figures for the E3000 model are ±3000 (±675 lb) and ±2,100 (±472 lb). A noncontacting strain measurement provides micron-level resolutions making it ideal for contact-sensitive specimens.