Definitions for "Charpy Impact Test"
A pendulum-type single-blow impact test in which the specimen, usually notched, is supported at both ends as a simple beam and broken by a falling pendulum. The energy absorbed in fracture, as impact strength or notch toughness.
A destructive mechanical test conducted on a precisely machined coupon of steel to be tested. The coupon is clamped in a special machine and subjected to lateral hammer blow. The test provides a relative measure of the toughness of the steel or its resistance to shock or impact loads and is usually required for material used in low temperature applications.
A series of three notched specimens are impact tested at a selected temperature to determine resistance (rated in foot pounds of energy) to crack initiation in metals. Refer to ASTM A-370 for details on specimen preparation, geometry and testing. See Joule for alternate unit of measurement.