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介绍了一种负阶跃力源上升时间的测量过程,通过在脆性材料断裂试件两侧粘贴细导线,获得其上下两个端面断裂时间差的测量结果,从而估计获得该动态力源产生的负阶跃力的上升时间,对于钢质材料,上升时间可小于30μs,低时可达到12.5μs。而对于陶瓷材料,上升时间可小于10μs,最低时可达到1μs。该结果可用于动态力源的设计和力传感器动态特性校准的参考。
A method of measuring the rise time of negative step source was introduced. The measurement results of the difference of the fracture time between the two upper and lower ends were obtained by affixing thin wires on both sides of the brittle material fracture specimen, so as to obtain the negative result of the dynamic force source Step force rise time, for steel, the rise time can be less than 30μs, low up to 12.5μs. For ceramic materials, the rise time can be less than 10μs, the lowest can reach 1μs. The result can be used as a reference for the design of dynamic force source and the calibration of force sensor dynamic characteristics.