大功率低频超声场测量研究进展

Review of the high-power low-frequency ultrasonic fields measurement

大功率低频超声场的主要特点是有空化产生 ,这给声场定量测量带来困难 ,而该类声场的测定是超声清洗、声化学等超声液体处理技术中的基本问题 ,掌握声场分布和空化强度的信息对于衡量超声系统的性能及其处理效果至关重要。文章综述了迄今用于测量大功率低频超声场的各种方法 ,将其分为直接测量方法和间接测量方法两大类进行阐述 ,介绍了每种测量方法的基本原理 ,并对各自的优缺点进行了对比分析。最后介绍了一些国内外的相关测量设备 ,结合大功率低频超声场测量领域目前的研究现状 ,探讨了今后该领域急需解决的问题及其发展方向。

Cavitation is a main characteristic of high - power low - frequency ultrasonic fields. It makes the quantitative measurement of the ultrasonic fields difficult, which is essential in ultrasonic liquid processing techniques such as ultrasonic cleaning, sonochemistry, etc. In order to evaluate the performance and treatment results of ultrasonic devices, it is important to acquire information of ultrasonic field distributions and cavitation intensity. This paper reviews various measurement methods for high - power low - frequency ultrasonic fields. These methods are divided into two classes in terms of their operating principles, and their advantages and disadvantages are compared. Finally, the paper introduces some related measurement equipment and raises problems for further studied.