A material strength test in which a notched specimen is broken by a blow from a pendulum, the energy absorbed being determined from the decrease in the swing of the pendulum.
- Aluminum alloys have no ductile-to-brittle transition; consequently; neither ASTM nor ASME specifications require low-temperature Charpy or Izod tests of aluminum alloys.
- There are basically two types of tests, Charpy and Izod tests for evaluation of impact strength.
- For Izod tests the pendulum is dropped from the lower position with the auxiliary weights removed.
Early 20th century: named after Edwin G. Izod, the British engineer who devised the test.
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