Investigation on the exploding foil initiators ignition enhanced by explosion-electricity coupling

IF 5.1 2区工程技术 Q1 Engineering

Defence Technology Pub Date : 2024-06-26 DOI:10.1016/j.dt.2024.06.013

Songmao Zhao, Haotian Jian, Ke Wang, Zheng Ning, Peng Zhu, Ruiqi Shen

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引用次数: 0

Abstract

Explosion-electricity coupling (EEC) is a technical method to induce electric energy into the plasma material produced by explosion to improve the output of explosion. Exploding foil initiator (EFI) which could produce plasma during electric explosion can serve as a good carrier for studying the EEC. To investigate the enhancement ability and mechanism of EEC in EFI ignition performance, a kind of EFI chips which could realize the EEC effect was designed and fabricated to observe the characteristics of current and voltage, flyer and plasma temperature during Boron Potassium Nitrate (BPN) ignition of the EFI. It was found that the EEC could enhance EFI ignition in terms of energy utilization, ignition contact surface, and high-temperature sustainability of plasma: firstly, the EEC prolonged the late time discharge (LTD) phase of the electric explosion, making the energy of capacitor effectively utilized; secondly, the EEC could create a larger area of ignition contact surface; last of all, the EEC effect enhanced its high-temperature sustainability by sustaining continuous energy input to plasma. It also was found that the ignition voltage of BPN could be reduced by nearly 600 V under the condition of 0.4 μF capacitance. The research has successfully combined EEC with EFI, revealing the behavioral characteristics of EEC and demonstrating its effective enhancement of EFI ignition. It introduces a new approach to improving EFI output, which is conducive to low-energy ignition of EFI, and expected to take the ignition technology of EFI to a new level.

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通过爆炸-电耦合增强爆炸箔引发器点火的研究

爆炸-电耦合（EEC）是一种将电能诱导到爆炸产生的等离子体材料中以提高爆炸输出的技术方法。能在电爆过程中产生等离子体的爆炸箔引发剂（EFI）可以作为研究 EEC 的良好载体。为了研究 EEC 对 EFI 点火性能的增强能力和机理，设计并制造了一种能够实现 EEC 效应的 EFI 芯片，观察了 EFI 点火过程中的电流电压、飞行器和等离子体温度特性。研究发现，EEC 能在能量利用、点火接触面和等离子体高温持续性方面增强电喷点火效果：首先，EEC 延长了电爆的后期放电（LTD）阶段，使电容器的能量得到有效利用；其次，EEC 能产生更大面积的点火接触面；最后，EEC 效应通过持续向等离子体输入能量增强了其高温持续性。研究还发现，在 0.4 μF 电容条件下，BPN 的点火电压可降低近 600 V。该研究成功地将 EEC 与 EFI 结合在一起，揭示了 EEC 的行为特征，并证明了其对 EFI 点火的有效增强。它引入了一种改善电喷输出的新方法，有利于电喷的低能点火，有望将电喷的点火技术提升到一个新的水平。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Defence Technology Engineering-Computational Mechanics

CiteScore

7.50

自引率

7.80%

发文量

1248

审稿时长

22 weeks

期刊介绍： Defence Technology, sponsored by China Ordnance Society, is published quarterly and aims to become one of the well-known comprehensive journals in the world, which reports on the breakthroughs in defence technology by building up an international academic exchange platform for the defence technology related research. It publishes original research papers having direct bearing on defence, with a balanced coverage on analytical, experimental, numerical simulation and applied investigations. It covers various disciplines of science, technology and engineering.