Charpy Impact Test

Charpy Impact Test. A test of the impact strength of a material, used to determine its relative ductility or brittleness. The test is executed by swinging a large, heavy hammer on a pendulum from a predetermined height. The hammer fractures the material sample, usually a block of a certain size with a notch cut in it. The height to which the pendulum swings is used to calculate the energy necessary to fracture the sample. The tester is equipped with a falling pendulum hammer, able to break, with a single blow, a sample carved in the middle and positioned on two supports. The test is carried out on a CHARPY sample in order to check the energy absorbed during the impact, which is measured in JOULE. The value stands for the impact strenght of the material ( resilience) . - Cast iron frame - Pendulum with hardened knife - Brake device to stop the pendulum - Impact energy 300J with 2J graduation - Falling angle: 140° - Pendulum mass Kg. 21, 300 - Impact speed: 5, 187 m/ s