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据Engineering Fracture Mechanics Vol26 №4 P619—623 1987报道:最近试图测定在承受高载荷速率下,延性材料的断裂韧性。已设计出一个改进的split Hopkinson试样来破断施有拉应力的紧凑拉伸试样,研究测定载荷速率以低速准静态到动态范围里由J积分表达的断裂韧性的变化。最近采用了
According to Engineering Fracture Mechanics Vol 26 № 4 P 619-623 1987: Recently, attempts have been made to determine the fracture toughness of ductile materials under high load rates. An improved split Hopkinson specimen has been designed to break a compact tensile specimen with tensile stress and to study the change in fracture toughness as a function of J-integral at low velocity quasi-static to dynamic range. Recently adopted