冲击压缩性的高精度测量技术

AN ACCURATE MEASUREMENT TECHNIQUE FOR SHOCK HUGONIOT

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％。

In order to accurately measure the shock Hugoniot,we introduce the methods toreduce the relative errors in the measurements for the size of samples and the time intervals in theexperiments and that to correct the errors caused by the inclined impact. The experimental resultsdemonstrate that these methods are very valid and the measurement errors for the projectile andshock wave velocities are 0.2%～0.4%and～0.1%,respoctively. On the other hand,we in-troduce an optical fibre measurement technique to obtain both shock wave velocity and shock tem-perature in the experiments.