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.
A standard V-notched test specimen bar at a predetermined temperature, supported as a cantilever beam is broken by means of a lead applied suddenly by a single blow from a calibrated pendulum to determine the notch toughness of the materials at a specific temperature. The notch toughness is indicated by the energy absorbed in breaking the bar.
An impact test in which a specially V-notched specimen is broken by the impact of a falling pendulum. The energy absorbed in fracture is a measure of the impact strength or notch toughness of the sample.
The Charpy impact test is a high strain-rate test which determines the amount of energy absorbed by a material during fracture. This absorbed energy is a measure of a given material's toughness and acts as a tool to study brittle-ductile transition. It is widely applied in industry, since it is easy to prepare and conduct and results can be obtained quickly and cheaply.