Tensile tests on wire represent a challenge for specimen grip design.
Wires can be very thin and at the same time very strong; as they cannot be machined for testing, cut-off lengths are used and require suitable gripping arrangements – simply clamping wires between jaws can cause failure at an unwanted location. Zwick can supply specimen grips featuring various gripping technologies, providing safe, reliable testing. For strain measurement the
optical extensometer videoXtens can be used with thin wires, with thicker
wires optical or contact extensometers can be employed.