Impact testing: 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 tests are conducted on  instrumented machines capable of measuring less than 1ft.lb. to 300ft. lbs. at
temperatures ranging from -320° F to over 2000°F. 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 testing subsize specimens down to
1/4 size. IZOD testing can be done up to 240ft.lbs. on standard single notch
and type-X3 specimens.
WMT&R also offers a line of Instrumented Impact Test 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. Tests
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 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. |
