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《Chinese Journal of High Pressure Physics》 1988-04
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AN IMPROVEMENT ON RESISTANCE MEASURING TECHNIQUE OF INSULANT UNDER SHOCK COMPRESSION

Gu Chenggang , Xie Panhai Wang Jingui , Jing Fuqian( Southwest Institute of Fluid Physics)(Institute of Applied Physics, Chengdu Universityof Science and Technology)  
An improved 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 improve -ment are:(1) it is in favour of enhancing the sample resistance signal magnitude, or extending the upper measurable eimit 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.
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【Co-references】
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