Investigation of liquid/solid interface waves with laser excitation and photoelastic effect detection
Investigation of liquid/solid interface waves with laser excitation and photoelastic effect detection
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DOI：
10.1063/1.2365377
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发表时间：
2006-11
影响因子：
3.2
通讯作者：
Q. Han;M. Qian;Hao Wang
中科院分区：
文献类型：
--
作者：
Q. Han;M. Qian;Hao Wang
本文报道了激光脉冲产生的透明液（水）-固（铝或钢）界面波的理论和实验研究。当激光干涉仪的探测光束掠过水-固体界面并与在水中传播的界面波汇合时，会产生额外的光学相移。来自干涉仪的输出信号与水中的声压成比例。从弹性波理论出发，导出了液固界面波的特征方程，并利用逆拉普拉斯变换和Hankel变换对水中的瞬态声压响应进行了数值模拟。所有界面波的声速和波形的实验结果与理论预测符合得很好。结果表明，基于光弹效应的光学探测方法是研究液-固界面波的有力手段。
Theoretical and experimental investigations on transparent liquid (water)∕solid (aluminum or steel) interface waves generated by laser pulse and detected with photoelastic effect are reported. When the detection beam of a laser interferometer is skimmed over the water∕solid interface and conjoined with the interface wave propagated in water, an extra optical phase shift is produced. The output signal from the interferometer is proportional to the acoustic pressure in water. The characteristic equation of the liquid∕solid interface wave is derived from elastic wave theory, and the transient response of acoustic pressure in water is simulated by means of inverse Laplace and Hankel transforms. The experimental results of acoustic velocity and wave form for all interface waves are in good agreement with theoretical predictions. They show that the optical detecting method based on photoelastic effect is very powerful for the research of liquid∕solid interface waves.