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.
WMT&R also offers a line of Instrumented Impact Testing designed to simulate real life rapid Energy absorption conditions caused by: falling objects, blows, collisions, drops, etc.
Drop-Weight Testing is preformed to ASTM E208. This test is conducted to determine the nil ductility transition temperature (NDT) of materials. Impact testing can also be conducted to your temperature requirements from elevated temperature down to -320°F.
Dynamic Tear Testing has a wide range of Research and Development applications. Used to study the effects of metallurgical variables like heat treatment, composition, and processing methods on the dynamic tear fracture resistance of material. Manufacturing processes, such as welding, can be effectively evaluated for their effect on dynamic tear fracture resistance. Additional uses for this impact test include evaluating the appropriateness of selecting a material for an application where a baseline correlation between Dynamic Tear energy and actual performance has been developed.