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| Pressure-tight Seal of Laser Initiated Squib and Its Influences |
| Received:March 14, 2019 Revised:April 16, 2019 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2019.09.008 |
| KeyWord:glass sealing, sealing performance, laser initiated squib (LIS), lenses, and optical film |
| Author | Institution |
| HE Ai-feng |
Key Laboratory on Applied Physical and Chemistry, Shaanxi Applied Physics and Chemistry Research Institute, Xi¢an , China |
| LI Jun |
Aviation Military Respective Office of Army Equipment Department in Xi¢an Area, Xi¢an , China |
| CAO Chun-qiang |
Key Laboratory on Applied Physical and Chemistry, Shaanxi Applied Physics and Chemistry Research Institute, Xi¢an , China |
| ZHU Jie |
Key Laboratory on Applied Physical and Chemistry, Shaanxi Applied Physics and Chemistry Research Institute, Xi¢an , China |
| CHEN Jian-hua |
Key Laboratory on Applied Physical and Chemistry, Shaanxi Applied Physics and Chemistry Research Institute, Xi¢an , China |
| MA Yue |
Key Laboratory on Applied Physical and Chemistry, Shaanxi Applied Physics and Chemistry Research Institute, Xi¢an , China |
| JING Bo |
Key Laboratory on Applied Physical and Chemistry, Shaanxi Applied Physics and Chemistry Research Institute, Xi¢an , China |
| WANG Hao-yu |
Key Laboratory on Applied Physical and Chemistry, Shaanxi Applied Physics and Chemistry Research Institute, Xi¢an , China |
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| Abstract: |
| Objective To promote the application of laser ignition technique in the field of safe ammunition. Methods The sealing property and influencing factors of laser initiated squib (LIS) based on glass-metal sealing were researched from demands of bearing high-dynamic pressure after the action of the laser initiated squib. A box-type resistance furnace was applied to seal the housing and lens of the laser initiated squib at 430 ℃ for 13-15 min. Comparison and analysis were conducted to the damage of the optical film for the lenses in the LID and the surface of the connected optical fiber to discuss the pressure bearing performance of laser initiated squib with different initial loading and sealing performance before and after ignition. Results Pressure tests for post-fire LISs were conducted, which revealed LISs with initial loading like BPN could withstand higher pressure (e.g. 30 MPa 2 min) than LISs with initial loading like BNCP. The sealing performance got worse with the increase of loading amount. Conclusion Improvement of the glass sealing technique is favorable for improving the airtightness, such as prolonging the sealing length and improving the pressure tightness after ignition. |
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