purpose of impact test

purpose of impact test

The purpose of impact testing is to measure an object's ability to resist high-rate loading. It is usually thought of in terms of two objects striking each other at high relative speeds. A part, or material's ability to resist impact often is one of the determining factors in the service life of a part, or in the suitability of a designated material for a particular application. Impact resistance can be one of the most difficult properties to quantify. The ability to quantify this property is a great advantage in product liability and safety.

Impact Testing most commonly consists of Charpy and IZOD Specimen configurations. The Charpy Impact Tests are conducted on instrumented machines capable of measuring less than 1 foot-pound. to 300 foot-pounds. at temperatures ranging from -320°F to over 2000°F. Impact test specimen types include notch configurations such as V-Notch, U-Notch, Key-Hole Notch, as well as Un-notched and ISO (DIN) V-Notch, with capabilities of impact testing subsize specimens down to ¼ size. IZOD Impact Testing can be done up to 240 foot-pounds. on standard single notch and type-X3 specimens.