【摘要】 本文探讨了一种利用纹影法观察声光介质内部超声波及测量其声速的方法,利用该方法可以直接观察到声光介质内部的超声波图像.在一定条件下,可以观察到晶体内部的折射率周期性分布图像,进而计算得到超声波在晶体内的传播速度.该方法为声光介质内部的声速测量提供了一个新的思路,并且有助于对超声波的传播有一个更形象的了解.更多还原

【Abstract】 A new method of ultrasonic wave velocity measuring by the Schlieren system is discussed. It is convenient to observe the ultrasonic wave spreading in the acoustic-optic medium. Meanwhile,an image of the periodic distribution of the refractive index can be shown on the observation screen under some circumstance,which can be used to calculate the ultrasonic wave velocity in the medium. This new method of velocity measuring helps to have a vivid understanding of the spreading of ultrasonic wave in the acoustic-optic medium.更多还原