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多级气隙-光纤探针

MULTI STAGE AIR GAP FIBRE OPTIC PROBE
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摘要 报道了外径为0.8mm的多级气隙-光纤探针技术。探针接收的弱光信号用变象管相机记录、贮存及数字化处理。该探针嵌入固体炸药TNT/RDX=40/60(ρ0=1.70g/cm3)和液体炸药硝基甲烷内部,测得爆速分别为8.02和6.27km/s。 Multi stage air gap fibre optic probe (MAFOP) is used to measure detonation velocity for solid and liquid explosives. The MAFOP is made of plastic fibre with 0 8mm in diameter, 10 meters in longth and 0 25 in numerical aperture. There are four holes drilled on the input end of the fibre which are used as the air gaps of the probe. The diameter of the holes are 0 25mm and the distance between holes can be changed as needed. When the air gaps of the MAFOP are inserted into the solid or liquid explosives and detonation wave propagates and reaches the probe, the air gaps will light intensively. The output ends of the fibres are put on the slit of image converter streak camera. A transient analyzer consisted of photocamera and micro processor stores and processes the image data on the image tube phosphor screen. The measured results used MAFOP for TNT/RDX(40/60, ρ =1 70g/cm 3) and nitromethane are presented in the paper. The results also show that the MAFOP is very useful in studying of explosive detonation when combined with image converter camera.
作者 方青 谭显祥
出处 《高压物理学报》 CAS CSCD 北大核心 1997年第2期103-109,共7页 Chinese Journal of High Pressure Physics
关键词 光纤探针 爆轰 变象管相机 流场分布 多级气隙 fibre optic probe, detonation, image converter streak camera.
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