A step-signal electirc probe technology for recognising the front surface of micro-spall

WEN Xuefeng; WANG Xiaoyan; WANG Jian; HONG Renkai; HU Yang; CHEN Yongtao

doi:10.11883/bzycj-2016-0271

Volume 38 Issue 2

Jan. 2018

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WEN Xuefeng, WANG Xiaoyan, WANG Jian, HONG Renkai, HU Yang, CHEN Yongtao. A step-signal electirc probe technology for recognising the front surface of micro-spall[J]. Explosion And Shock Waves, 2018, 38(2): 309-315. doi: 10.11883/bzycj-2016-0271

Citation:

WEN Xuefeng, WANG Xiaoyan, WANG Jian, HONG Renkai, HU Yang, CHEN Yongtao. A step-signal electirc probe technology for recognising the front surface of micro-spall[J]. Explosion And Shock Waves, 2018, 38(2): 309-315. doi: 10.11883/bzycj-2016-0271

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A step-signal electirc probe technology for recognising the front surface of micro-spall

doi: 10.11883/bzycj-2016-0271

Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621999, Sichuan, China

Received Date: 2016-09-09
Rev Recd Date: 2017-02-22
Publish Date: 2018-03-25

Abstract

Abstract

Effected by micro-jetting, the usual measuring technologies are hard to recognise the front surface of micro-spall of a metal sample that is of complex structure. In this paper, a step-signal electric-probe measuring technology is proposed to solve this problem. The abnormal discharging phenomenon of the conventional electric probe is analyzed under the effect of micro-jetting and the step-signal producing circuit is designed. Explosive load experiments on Sn metal samples are carried out. The discharging signals of the conventional electric probe and step signal electric probe are compared and the useful information of the step signal is analyzed. Compared to X-ray photograph, we get that the position where the high voltage of step signal responses is the front surface of micro-spall. The results of the experiment show that the step-signal electric probe is able to distinguish the effect of micro-jetting and recognise the front surface of micro-spall of the metal samples under explosive load.
- information processing technology,
- micro-spall,
- electric probe,
- step signal

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References

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