Charpy impact test is generally used to measure the impact toughness of materials. But the physical meaning of impact energy measured by traditional impact testing machine is not clear. 夏比冲击试验长期以来被广泛应用于评价材料冲击韧性的优劣,但是传统冲击试验机测定的冲击功物理意义不明确,不能表征金属材料的冲击韧性。