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摘要: 详细介绍了在冲击压缩性测量中为提高冲击波速度测量精度，在减小样品尺寸测量的相对误差以及保证安装过程不破坏其原有加工精度的技术措施。还介绍了利用多路时间间隔测量仪记录冲击波传播时间时，如何减小传输误差以及利用探针的合理布局对冲击波阵面的倾斜和弯曲畸变进行修正的方法。此外，介绍了利用光纤技术同时获得冲击波速度和冲击温度信息的技术。采用上述技术措施后使弹丸速度的测量误差约为0.2%~0.4%，冲击波速度的测量误差约为~1%。Abstract: In order to accurately measure the shock Hugoniot, we introduce the methods to reduce the relative errors in the measurements for the size of samples and the time intervals in the experiments and that to correct the errors caused by the inclined impact. The experimental results demonstrate that these methods are very valid and the measurement errors for the projectile and shock wave velocities are 0.2%～0.4% and ～0.1%, respectively. On the other hand, we introduce an optical fiber measurement technique to obtain both shock wave velocity and shock temperature in the experiments.
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Key words:
- shock wave velocity /
- particle velocity /
- shock Hugoniot /
- two-stage light gas gun /
- projectile velocity
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经福谦, 等. 实验物态方程导引. 北京: 科学出版社, 1986. Ken-ichi Kondo, Akira Sawaoka, Shinroku Saito. Rev Sci Instrum, 1977, 48(12): 1581-1582. Mitchell A C, NelIis W J. J Appl Phys, 1981, 52(5): 3363. -
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