PDV方法测量电爆炸驱动小飞片速度  

Photonic Doppler Velocimetry of Mini Flyers Driven by Electrically Exploded Foils

作　　者：陈清畴[1,2] 陈朗[1] 覃文志[2] 郭菲[2] 韩忠飞 

机构地区：[1]北京理工大学机电学院,北京100081 [2]中国工程物理研究院化工材料研究所,四川绵阳621900

出　　处：《含能材料》2014年第3期413-416,共4页Chinese Journal of Energetic Materials

摘　　要：为优化爆炸箔起爆器性能,采用光子多普勒速度测量技术(PDV)获得了电爆炸驱动小飞片的速度历程。设计了一种电爆炸驱动小飞片测试装置,可以产生Φ0.35 mm×25μm尺寸的小飞片,试验中未对飞片进行任何处理。对两发电爆炸驱动小飞片进行了PDV测速试验,获得了小飞片的速度历程,测得的有效时长约为160 ns。两发飞片的最大速度分别为4520 m·s-1和4330 m·s-1,速度差约为4%,一致性较好。飞片速度剖面有明显拐点。在拐点之前速度上升较快,在60 ns(0.1 mm位移)内达到了最终速度的75%。在拐点之后,速度上升相对变缓,在100 ns内完成了剩余25%速度的增加。To optimize the performance of exploding foil initiators,the velocity histories of mini flyers driven by electrically exploded foils were obtained by Photonic Doppler Velocimetry（ PDV）. A electrically driven flyer device was designed,which could generate a mini flyer with Φ0. 35 mm × 25 μm size and the flyers in tests do not have any special treatment. Two shot flyers were tested by PDV diagnostics,and the velocity histories of mini flyer were obtained. The effective length is about 160 ns. The maximum velocities of two shots of flyers are4520,4330 m·s- 1 respectively,and the velocity difference is about 4%,which having a good consistency. The profiles of two velocities have an evident inflection point. Before the point,the velocities grow quickly and reach 75% of the final velocity in 60 ns（ 0. 01 mm displacement）. After the point,the velocities grow relatively slow and finish the est 25% acceleration in 100 ns.

关 键 词：爆炸力学 飞片速度 光子多普勒速度测量技术(PDV) 电爆炸 

分 类 号：O384[理学—流体力学]