Charpy impact test,
Definition of Charpy impact test:
Destructive mechanical test in which a pendulum hammer (swinging through a fixed distance) fractures a standard size notched piece of material with one blow. It indicates how the material will respond to suddenly applied shock (stress) by measuring the energy absorbed in breaking the piece. The test results are expressed in foot-pounds or kilojules. See also Izod impact test.
Meaning of Charpy impact test & Charpy impact test Definition