全光纤VISAR在动高压中的测量技术探索

摘要

A new kind of VISAR called all-fiber white light velocity int erfermetic system for any reflector is introduced.The system was used to measure the free surface velocities of samples under dynamic loading.Experimental resul ts show that the system works well for low velocity(10m/s).It seems that the sys tem needs to be improved for higher velocity.%介绍了全光纤任意反射面速度干涉仪(F-VISAR)的原理，并在动高压条件下进行了初步应用。结果表明，在Hopkinson杆实验中冲击速度较低，全光纤VISAR系统工作性能很好；在一级轻气炮实验中冲击速度较高，尚存在一些技术问题，并对此进行了分析与讨论。