测量冲击压缩下绝缘材料电阻率技术的一个改进

古成钢; 谢盘海; 王金贵; 经福谦

doi:10.11858/gywlxb.1988.04.008

测量冲击压缩下绝缘材料电阻率技术的一个改进

doi: 10.11858/gywlxb.1988.04.008

1.
成都科技大学应用物理研究所，四川成都 610065；
2.
西南流体物理研究所，四川成都 610003

详细信息

通讯作者:
古成钢

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出版历程
- 收稿日期: 1988-09-01
- 修回日期: 1988-09-01
- 刊出日期: 1988-12-05

An Improvement on Resistance Measuring Technique of Insulant under Shock Compression

1.
Institute of Applied Physics, Chengdu University of Science and Technology, Chengdu 610065, China;
2.
Southwest Institute of Fluid Physics, Chengdu 610003, China

More Information

Corresponding author: GU Cheng-Gang

摘要

摘要: 对A. C. Mitchell等的测量冲击压缩下绝缘材料电阻率的技术做了改进，其主要之点是，在测量电路中增加了一个记录冲击波进入试件的电支路，并在新支路中串接一个基准电阻。这样做的好处是：（1）便于提高试件电阻信号的电平，或提高试件电阻的可测上限范围；（2）可以用基准电阻的实测值对试件的实测电阻值进行校核；（3）可以同时测得试件中的冲击波速度值。文中还以聚四氟乙烯材料的实测结果为例，对本方法的特点做了初步讨论。
- 冲击压缩 /
- 电阻测量 /
- 绝缘材料
Abstract: An improvement technique, in comparison with that of the Mitchell, et al, on measuring the resistance of insulant under shock compression is proposed in this paper. The main point of the improvement is adding a circuit branch with an etalon resistance connected in series in it, for monitoring the shock-wave arrival time entering the sample, in the measuring electrical circuit. Advantages of the improvement are: (1) it is in favor of enhancing the sample resistance signal magnitude, or extending the upper measurable emits of the sample resistance; (2) the etalon resistance could be used to check the measured value of the sample resistance; and (3) the shock velocities in the sample were obtained simultaneously. A measurement of Teflon specimen is given as an example. A brief discussion of the characteristics of the improvement is given.
- shock compression /
- resistance measurement /
- insulant