超声换能器声场特性的可视化定量研究

摘要

To study the piston ultrasound field, a visualization quantitative technique is exploited. High accuracy scanning system based on high frequency hydrophone is already built, and then the study on about beam - width and effective diameter parameters are carried out which produced by the plane piston transducer. Experimental results" show that the visualization system can directly reveals space distribution of ultrasonic field, experiment and theoretical results agree very well, and the system can provide a reliable method for evaluating ultrasound equipments or transducers.%利用可视化定量研究技术,在已建立的高精度扫描系统的基础上,利用高频水听器法对平面活塞换能器声场进行了三维可视化,并对某平面活塞换能器所产生声场的波束直径、探头有效直径等参数进行了定量测量.实验结果表明,实现的声场可视化系统能够直观、真实地反映换能器的声场分布,测量所得到的声场与理论计算的声场分布吻合很好,能够为超声换能器及设备的评价提供可靠的手段.