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| Failure Law of Electromagnetic Environment for Bridge Wire Electro-explosive Devices |
| Received:September 11, 2024 Revised:November 18, 2024 |
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| DOI：10.7643/issn.1672-9242.2024.11.004 |
| KeyWord:electro-explosive devices electromagnetic environment coupling model failure pattern failure law probability of failure |
| Author | Institution |
| LIU Luoyi |
State Key Laboratory of Transient Chemical Effects and Control, Shaanxi Institute of Physics and Chemistry, Xi'an, China;School of Environment and safety Engineering, North University of China, Taiyuan , China |
| YAO Hongzhi |
State Key Laboratory of Transient Chemical Effects and Control, Shaanxi Institute of Physics and Chemistry, Xi'an, China |
| ZHAO Tuan |
State Key Laboratory of Transient Chemical Effects and Control, Shaanxi Institute of Physics and Chemistry, Xi'an, China |
| LYU Jiang |
Xi'an Northern Qinghua Electromechanical Co., Ltd., Xi'an , China |
| ZHAO Jia |
State Key Laboratory of Transient Chemical Effects and Control, Shaanxi Institute of Physics and Chemistry, Xi'an, China |
| AN Chongwei |
School of Environment and safety Engineering, North University of China, Taiyuan , China |
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| Abstract: |
| The work aims to ensure the safe and reliable operation of bridge wire electro-explosive devices(EEDs) in electromagnetic environments, reduce the risk of failure in different application scenarios, and explore their failure law. By combining 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 failure 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 practical applications. |
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