定义脆性材料的冲击阻力为抵抗瞬态破坏的能力,它主要依赖于材料的极限应变和裂纹扩展速率.冲击阻力的倒数为脆性.提出了相对脆性的计算方法.并定义材料的抗冲击性能为强度与脆性之比,称为冲击模量.测试计算了11种材料的相对脆性和冲击模量.讨论了脆性和冲击模量的物理意义.
Impact resistance was defined as the buffering capacity of materials, it mainly depends on two kinds of material behaviour. The first is crack-extension speed, the lower the speed, the higher the impact resistance. The second is limit strain of materials.
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