桥丝式电火工品电磁环境失效规律  

Failure Law of Electromagnetic Environment for Bridge Wire Electro-explosive Devices

作　　者：刘跞仪 姚洪志[1] 赵团[1] 吕江 赵甲 安崇伟 LIU Luoyi;YAO Hongzhi;ZHAO Tuan;LYU Jiang;ZHAO Jia;AN Chongwei(State Key Laboratory of Transient Chemical Effects and Control,Shaanxi Institute of Physics and Chemistry,Xi'an 710061,China;School of Environment and safety Engineering,North University of China,Taiyuan 030051,China;Xi'an Northern Qinghua Electromechanical Co.,Ltd.,Xi'an 710025,China)

机构地区：[1]陕西应用物理化学研究所瞬态化学效应与控制全国重点实验室,西安710061 [2]中北大学环境与安全工程学院,太原030051 [3]西安北方庆华机电有限公司,西安710025

出　　处：《装备环境工程》2024年第11期25-32,共8页Equipment Environmental Engineering

摘　　要：目的 确保桥丝式电火工品在电磁环境下能够安全可靠地工作,降低其在不同应用场景中的失效风险,探索失效判据并研究失效特征,以获得失效规律。方法 采用天线理论、传输线理论以及电路理论相结合的方式,对1#桥丝式电火工品在10 kHz~18 GHz的感应电流分布进行解析计算,并在敏感频率下开展试验研究。通过试验,获得在不同电场强度下该型桥丝式火工品的失效概率分布情况。结果 随着电磁场强度的增大,桥丝式感应电流不断增加,基本呈现出线性增加的规律。当感应电流超过桥丝式火工品最小全发火电流的20%时,产品逐渐出现失效现象,且感应电流越大,失效概率越高;当感应电流超过桥丝式火工品最大不发火电流的15%时,安全性风险逐步增加。桥丝式电火工品在电磁场中失效的界面主要集中在桥丝以及与桥丝接触的药剂上,失效模式分为物理失效和化学失效。结论 采用电阻超差10%作为失效判据的方法是可行的。不同频率和强度的电磁场对桥丝感应电流的影响程度各不相同,在敏感频率条件下探讨桥丝式电火工品的失效问题,对实际应用具有更重要的指导意义。The work aims to ensure the safe and reliable operation of bridge wire electro-explosive devices(EEDs)in elec-tromagnetic environments,reduce the risk of failure in different application scenarios,and explore their failure law.By combin-ing antenna theory,transmission line theory,and circuit theory,the induced current distribution of 1#bridge wire EED in 10 kHz-18 GHz was analyzed and calculated.Experimental research was conducted at sensitive frequencies to obtain the failure probability distribution of this type of bridge wire EEDs with different electric field strengths.As the electromagnetic field strength increased,the induced current of the bridge wire EED continued to increase,showing a linear increase pattern.When the induced current exceeded 20%of the maximum firing current of the bridge wire EED,the product gradually failed,and the failure probability increased with the increase of the induced current.When the induced current exceeded 15%of the maximum firing current of the bridge wire EED,the risk of safety increased gradually.The interface where the bridge wire EED failed in the electromagnetic field was mainly concentrated on the bridge wire and the agent in contact with the bridge wire.The failure modes included physical failure and chemical failure,respectively.It is feasible to use a resistance deviation of 10%as the fail-ure criterion method.The impact of electromagnetic fields of different frequencies and intensities on the induced current of bridge wires varies.Exploring the failure of bridge wire EEDs under sensitive frequency conditions is more instructive for prac-tical applications.

关 键 词：电火工品 电磁环境 耦合模型 故障模式 失效规律 失效概率 

分 类 号：TJ450[兵器科学与技术—火炮、自动武器与弹药工程]