Supervisor:
Southwest Ordnance Industry Bureau
Organizer:
Chongqing Ordnance Industry Society
Chongqing University of Technology
Chongqing University of Technology
Analysis of explosion firelight characteristics by remote spectrum identification method
| DOI: | 10.11809/bqzbgcxb2023.12.016 |
| Keywords: | remote spectral detection; spectral analysis; fiber optic aiming; explosive flames; intensity attenuation |
| Abstract: | A remote transient strong light spectrum testing system suitable for complex environments is proposed to address the issues of close detection distance, inapplicability to harsh environments, and small detectable flash intensity range in the measurement of transient strong light spectrum during the detonation process of warheads. Design a coaxial switching fiber optic telescopic lens to achieve long distance optical signal acquisition, with a collection range of up to 2 m2, solving the problem of remote aiming in harsh environments such as high temperature and strong vibration. The use of fiber optic attenuators to achieve continuous proportional attenuation of strong light solves the problem of saturation of photoelectric sensors caused by excessive flash intensity. Using this spectral testing system, the emission spectra of 200 g TNT explosive during the explosion process are obtained at a distance of approximately 18m from the explosion center, ranging from 350 nm to 1 000 nm. The experiment shows that the duration of the explosion flame is about 20 ms, and the maximum light intensity is about 350 us after the initial detonation.The explosion fire spectrum consists of continuous spectrum and line spectrum. The general characteristics of the spectrum have good repeatability. The distribution trend of the generated characteristic spectral lines is consistent, and the characteristic spectral lines of elements such as NaI; KI; Cu II; Ag Iappear. |
| Issue: | Vol. 44 No. 12 (2023) |
| Published: | 2023-12-28 |
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