综述应用Hopkinson杆技术进行材料动态断裂韧性研究的实验方法.介绍入射波整形技术和力传感器技术在动态断裂韧性实验中的应用.简要总结动态应力强度因子的计算方法和裂纹起裂时间的确定方法.展望动态断裂韧性研究的发展趋势.
The experimental techniques of dynamic fracture toughness based on Hopkinson bar technique were summarized.Some new improvements on the technique such as pulse shaping technique and force transducer were introduced.The methods of calculating dynamic stress intensity factor and determining crack-initiation time were generalized briefly.The viewpoint of future development of dynamic fracture toughness was proposed.
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