The signal characteristics of light flash generated by hypervelocity impact natural dolomite plate
The signal characteristics of light flash generated by hypervelocity impact natural dolomite plate
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DOI：
10.3233/jae-131735
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发表时间：
2014
影响因子：
0.6
通讯作者：
Enling Tang;Hongjie Xu;Meng Wang;Qingming Zhang;Zhiqiu Li;Shenghai Xiang;Minghai Yang
中科院分区：
文献类型：
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作者：
Enling Tang;Hongjie Xu;Meng Wang;Qingming Zhang;Zhiqiu Li;Shenghai Xiang;Minghai Yang
为了研究超高速碰撞产生的闪光现象，在实验室条件下，利用二级轻气炮在不同碰撞速度和相同碰撞角度下进行了一系列实验。利用光纤高温计测量系统对超高速撞击天然白云岩板的整个物理过程中的闪光进行了测量，实验结果表明，最大闪光强度随撞击速度的增大而减小，对于聚碳酸酯弹丸撞击天然白云岩板，最大闪光强度应存在一个临界撞击速度，其在550 nm-700 nm的波长处可以在2.52 km/s和4.21 km/s之间。此外，在本文的实验条件下，闪光强度峰值为0.4 ~ 0.5 mW.cm-2.nm-1。
To investigate light flash produced during hypervelocity impact in the laboratory, we have conducted a series of experiments on a two-stage light gas gun at different impact velocities and the same impact angle. Light flash were acquired through optical fiber pyrometer measurement system during the whole physical process in hypervelocity impact, Experimental results showed that the maximum light flash intensity decreases with impact velocity increasing, and maximum light flash intensity should exist a critical impact velocity for polycarbonate projectile impacting natural dolomite plate, which may be between 2.52 km/s and 4.21 km/s at the wavelength of 550 nm–700 nm. In addition, the light flash intensity peak value was 0.4∼0.5 mW.cm−2.nm−1 in the experimental conditions in the paper.