The impact resistance test determines the amount of energy absorbed by a material during fracture. This absorbed energy is a measure of a given material’s notch toughness and acts as a tool to study temperature-dependent ductile-brittle transition.
In case of Charpy or Izod, the impact is induced by a pendulum hammer on the sample. The residual energy of the hammer is measured.
The impact test is performed on a standardized sample of 80 x 10 x 4 mm, with or without notch. The sample is placed in a frame and the pendulum is released.
- Quality control
- Determination of the impact resistance of plastics
ISO 179-1:2010 -- Plastics -- Determination of Charpy impact properties -- Part 1: Non-instrumented impact test
ISO 180:2000 -- Plastics -- Determination of Izod impact strength