Journal
SENSORS
Volume 17, Issue 11, Pages -Publisher
MDPI
DOI: 10.3390/s17112552
Keywords
chirped fiber Bragg grating; detonation velocity; relative standard uncertainty
Funding
- Institute of Chemical Materials, China Academy of Engineering Physics
- Ministry of Industry and Information Technology of the People's Republic of China
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Detonation velocity is an important parameter for explosive, and it is crucial for many fields such as dynamic chemistry burn models, detonation propagation prediction, explosive performance estimation, and so on. Dual-channel detonation velocity measurement method and system are described. The CFBG sensors are pasted both on the surface and in the center of the explosive cylinder. The length of CFBG sensors is measured via the hot-tip probe method. The light intensity reflected from the CFBG sensors attached to the explosive is transformed to voltage, and the voltage-time is then measured with the oscilloscope. According to the five experiments results, the relative standard uncertainty of detonation velocity is below 1%.
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