空气对超声波吸收的定量分析

平面波在传播过程中,其强度会随传播距离而衰减,这表明介质会吸收波的能量,这种现象称为波的吸收。本实验通过使用声速测量仪,对超声波在空气中传播时强度的变化进行研究,计算空气对超声波的吸收系数。

In the process of plane wave propagation, the intensity of plane wave decreases with the propagation distance, which indicates that the medium absorbs the energy of the wave, which is called wave absorption. In this experiment, the intensity change of ultrasonic wave propagating in the air was studied using the sound velocity measuring instrument, and the absorption coefficient of the ultrasonic wave was calculated.