This category includes testing equipment that applies impact loads to materials and products to evaluate their impact resistance. It encompasses Charpy impact testing machines, Izod impact testing machines, drop weight impact testing machines, and pendulum impact testing machines. These devices are used for evaluating brittle fracture characteristics and toughness of metallic materials, resin materials, and composite materials, and are essential for quality control of automotive parts, aircraft components, and construction materials. Unlike static tensile testing machines or compression testing machines, this equipment group specializes in dynamic impact energy fracture testing.