超高速撞击铝板碎片云测量  

Measurement on Debris Cloud Produced by Impacting Al Plate with Hypervelocity

作　　者：柯发伟[1] 黄洁[1] 李鑫 宋强[1] 马兆侠[1] 文雪忠[1] 柳森[1] KE Fa-wei;HUANG Jie;LI Xin;SONG Qiang;MA Zhao-xia;WEN Xue-zhong;LIU Sen(China Aerodynamics Research and Development Center, Mianyang 621000, China)

机构地区：[1]中国空气动力研究与发展中心

出　　处：《空间碎片研究》2019年第2期18-24,共7页Space Debris Research

摘　　要：超高速撞击形成碎片云的形貌及其运动特性可验证仿真计算模型的结果,为建立碎片云模型、研究超高速撞击机理、研制新型防护材料提供基础数据。为了获得超高速撞击铝板形成的碎片云特征数据,开展了阴影成像系统的标定、碎片云阴影成像和数据处理研究,以及光源系统和成像系统同步控制的碎片云前光成像。解决了超高速碰撞过程中强烈火光对碎片云成像的影响,验证了超高速撞击碎片云空间分布及运动特性测量技术。同时将试验结果与数值结果进行了对比。最后,文章还提出了碎片云的前光及阴影成像测量方案。The geometric size and space distribution of the debris, which is produced by the Al sphere impacting the Al plate with hypervelocity, would provide useful data for validating the results of the simulation model, establishing the debris cloud model,researching the mechanism of the hypervelocity impact, and probing the new shielding materials. The two technologies of the sequenced shadowgraph and the front light imaging are used to obtain the characteristic data of the debris cloud respectively. According to the calibration and images processing for the sequenced shadowgraph system, the 2 dimensional moving trajectories of the debris cloud are obtained. As the intense flame in the measurement area would impact the front light imaging, the clear image of the debris cloud is obtained by controlling the light source system and the camera synchronously. The two measurement techniques are validated preliminarily by the hypervelocity impact test. Meanwhile, the measurement and simulation results are compared and analyzed. The stereo measurement scheme of the debris cloud is proposed combining the two measurement techniques.

关 键 词：超高速撞击 碎片云 阴影成像 前光成像 

分 类 号：V11[航空宇航科学与技术—人机与环境工程]