微型爆炸箔设计参数对电爆特性的影响

贺佳; 庞树财; 罗斌强; 谭福利

doi:10.11858/gywlxb.2016.02.011

微型爆炸箔设计参数对电爆特性的影响

doi: 10.11858/gywlxb.2016.02.011

1.
中国工程物理研究院流体物理研究所，四川绵阳 621999
2.
中国工程物理研究院电子工程研究所，四川绵阳 621999

基金项目:

中国工程物理研究院科学技术发展基金 2012A0203009

详细信息

作者简介:
贺佳(1980—), 女，助理研究员，主要从事爆炸与冲击方面的研究. E-mail:hejia113@126.com

中图分类号: TJ450.1;O487
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出版历程
- 收稿日期: 2015-03-20
- 修回日期: 2015-04-17

Influence of Micro-Exploding Foil Design Parameters on the Electric-Explosion Characteristics

1.
Institute of Fluid Physics, CAEP, Mianyang 621999, China
2.
Institute of Electronic Engineering, CAEP, Mianyang 621999, China

摘要

摘要: 通过实验，研究了充电电压、爆炸箔尺寸、绝缘膜覆盖情况等因素对微型爆炸箔电爆炸特性的影响。结果表明，当回路参数一定时，爆炸箔的爆炸时间主要由充电电压和爆炸箔的横截面积决定，充电电压越高或者爆炸箔的横截面积越小，爆炸时间越短；而爆炸箔长度以及绝缘膜覆盖情况对爆炸箔爆炸时间的影响较小。此外，实验还给出了微型铜箔横截面积为100~600 μm²时的电压起爆阈值，能够为以微型爆炸箔作为导通元件的平面介质开关的优化设计提供参考。
- 电爆炸特性 /
- 爆炸时间 /
- 微金属箔
Abstract: The influence of the input voltage, size of the exploding foil, and the covering material on the exploding characteristics of the micro-size exploding foil were investigated by our experiment.The results show that the exploding time span is mainly determined by the input voltage and the cross section of the exploding foil and, in addition, neither the length nor the covering material of the exploding foil have any significant effect on its exploding characteristics.The exploding time span tends to get shorter with the increasing of the input voltage and the decreasing of the cross section area.Besides, the threshold curves of the electric-explosion of the micro-copper foil with certain circuit parameters are obtained from the experiment, which can provide valuable information on the optimization of the design of the micro-exploding foil.
- electric-explosion characteristics /
- explosion time /
- micro-exploding foil

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图 1 PSS和PTS开关结构示意图

Figure 1. Schematic diagrams of the PSS and PTS

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图 2 PDS开关结构示意图

Figure 2. Configuration of PDS switch

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图 3 实验电路图

Figure 3. Schematic diagram of experimental circuit

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图 4 微型爆炸箔样品结构

Figure 4. Configuration of micro-exploding foil

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图 5 典型的电流波形

Figure 5. Typical current-time curve

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图 6 爆炸箔在不同电压下爆炸后图片

Figure 6. Exploding foil pictures taken after exploding with different input voltages

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图 7 爆炸箔爆炸后的图片

Figure 7. Exploding foil pictures taken after exploding with different covering conditions

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图 8 电流曲线

Figure 8. Current-time curve

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图 9 爆炸箔阈值曲线

Figure 9. Threshold curves of exploding foil

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表 1 充电电压对电爆炸参数的影响

Table 1. Influence of the input voltage of exploding foil on the electric-explosion parameters

U_i/(V)	I_max/(A)	t_a/(μs)	I_exp/(A)	J/(MA/cm²)	t_b/(μs)
300	164	0.302	101	30	0.490
500	266	0.305	265	78	0.304
700	358	0.307	335	99	0.229
900	468	0.308	411	121	0.196
1 100	577	0.310	467	137	0.174
1 300	687	0.312	500	147	0.154

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表 2 爆炸箔横截面积对电爆炸参数的影响

Table 2. Influence of the foil's cross section on the electric-explosion parameters

σ/(10^-4cm²)	I_max/(A)	t_a/(μs)	I_exp/(A)	J/(MA/cm²)	t_b/(μs)	g/(A²·s/cm⁴)
170	465	0.310	279	164	0.118	12.1
255	467	0.310	354	139	0.158	11.9
340	466	0.308	411	121	0.196	12.2
425	468	0.307	450	106	0.238	12.1
510	467	0.306	474	93	0.280	12.0
580	468	0.305	411	71	0.415

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表 3 爆炸箔长度对电爆炸参数的影响

Table 3. Influence of the foil length on the electric-explosion parameters

l/(μm)	I_max/(A)	t_a/(μs)	I_exp/(A)	J/(MA/cm²)	t_b/(μs)
85	358	0.307	335	98.5	0.229
125	343	0.306	327	96.4	0.226
275	326	0.306	320	94.1	0.225

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参考文献(8)

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