激光速度干涉仪测量炸药驱动金属的运动速度

为了准确观察炸药驱动金属运动的细节。用激光速度干涉仪（VISAR）测量了金属平板表面速度变化历程，介绍了激光速度干涉仪测量参数确定和原始干涉波形信号的处理方法。讨论了波形信号丢失情况，如何判断丢失的条纹数及对测量速度进行修正的方法。对于单灵敏度激光速度干涉仪，通过对测量速度的理论估算。能够帮助判断丢失条纹数。从而得到正确的测量结果。

FREE-SURFACE VELOCITY OF METAL PARTS DRIVEN BY EXPLOSIVES MEASURED WITH VISAR INTERFEROMETER

For observing the details of movement of metallic parts driven by explosive detonation, free surface velocities of the metal plates were measured with the VISAR interferometer. Processes of obtaining parameters for the VISAR interferometer and ways of dealing with the originality wave signals are introduced. Loss of signals and the methods for judging the numbers of lost stripes, and the revision of velocities are discussed. For the single sensitiveness VISAR interferometer, the numbers of lost stripes in signals can be judged by calculating the velocities so as to get accurate experimental results.