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| Measurement Technology of Dielectric Constant of Initiating ExplosiveandResponse Analysis |
| Received:September 12, 2024 Revised:October 18, 2024 |
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| DOI：10.7643/issn.1672-9242.2024.11.003 |
| KeyWord:initiating explosives dielectric constant testfixture inversion response characteristic protection |
| Author | Institution |
| ZHAO Tuan |
State Key Laboratory of Transient Chemical Effects and Control,Shaanxi Applied Physics and Chemistry Research Institute, Xi'an , China |
| SONG Mingjun |
Research Institute of 210, Sixth Academy of China Aerospace Science and Technology Corporation, Xi'an , China |
| JI Xiangfei |
State Key Laboratory of Transient Chemical Effects and Control,Shaanxi Applied Physics and Chemistry Research Institute, Xi'an , China |
| ZHAO Jia |
State Key Laboratory of Transient Chemical Effects and Control,Shaanxi Applied Physics and Chemistry Research Institute, Xi'an , China |
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| Abstract: |
| The work aims to analyze and measure the dielectric constant of initiating explosives at different frequencies, so as tomeasure the sensitivity of electromagnetic wave response of initiating explosives. Using the coaxial electromagnetic wave transmission technology, the fixture for the test of dielectric constant, the inversion algorithm and APP for dielectric constant test were designed and developed, and the complex dielectric constants of initiating explosives wereinverted by measuring the reflection coefficient, so as to measure the complex dielectric constant of initiating explosives in the microwave frequency band of 1-18GHz. The complex dielectric constants of initiating explosiveof HY-5 black powder were measured and analyzed, and their response characteristics in the frequency range of 1-18 GHz were obtained. The variation range of the real part of the dielectric constant of black powder was from 1.0 to 5.0, and a maximum value of 4.91 appeared in 4.52 GHz. The energy absorbed from the microwave radiation field of initiating explosives is proportional to their own dielectric constant.The larger the dielectric constant of initiating explosives, the larger the energy absorbed from the microwave radiation field.At the microwave resonance point, the initiating explosives need to be transported and stored with a certain degree of safety protection. |
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