how impact test is done

how impact test is done

    Charpy impact test is a test material notch toughness test, the preparation of the standard is 55 mm long and 10 mm wide and thickness less than 10 mm sample, in a surface processing a 2 mm deep u-shaped or v-notch, control the pendulum is under the impact in setting height relative surface notch, pendulum thrust sample after the height of the swing-up is a measure of the energy absorption after blunt crack sample, which can measure the absorption of energy in the sample fracture, in order to get the notch toughness of the material was tested.Typically, three samples are tested at any one temperature and the results averaged.Charpy tests can be performed on ASTM E23 and ISO 148 at various test temperatures.