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3D focusing acoustic lens optimization method using multi-factor and multi-level orthogonal test designing theory
Applied Acoustics ( IF 3.4 ) Pub Date : 2020-12-01 , DOI: 10.1016/j.apacoust.2020.107538
Hongyu Sun , Shen Wang , Songling Huang , Lisha Peng , Qing Wang , Wei Zhao , Juna Zou

Abstract Focusing systems that consist of acoustic lenses exhibit higher controllability and focusing intensity when manipulating sound waves. Different parameters have different effects on the performance of the acoustic lens, so analyzing a variety of parameter combinations for the acoustic lens is difficult because of the complexity of the test. Therefore, we report an analytical method for studying the focusing performance of different factors on acoustic lenses at different levels, and the influence degree of each factor is investigated through range analysis. Results show that the factors that have the most significant influence on the focusing intensity, focal-area dimensions, and focal length are the incident sound field’s pressure P0, cell dimension c, and cell edges k, respectively. Moreover, the effects of other parameters, including the biased incident-wave angles, are obtained and analyzed through finite-element simulations. After analyzing and comprehensively comparing the influences of various parameters, the optimal parameter combination is obtained to achieve the best focusing performance of an acoustic lens. The experimental results show that the focusing intensity of the optimized acoustic lens is nearly 90% higher than the non-optimized one, which proves the effectiveness of the orthogonal test-optimization method in this paper.

中文翻译:

基于多因素多层次正交试验设计理论的3D聚焦声透镜优化方法

摘要 由声透镜组成的聚焦系统在操纵声波时表现出更高的可控性和聚焦强度。不同的参数对声透镜的性能有不同的影响,因此由于测试的复杂性,分析声透镜的各种参数组合是很困难的。因此,我们提出了一种研究不同因素对声学透镜在不同层次上的聚焦性能的分析方法,并通过极差分析研究了各因素的影响程度。结果表明,对聚焦强度、焦区尺寸和焦距影响最显着的因素分别是入射声场的压力 P0、单元尺寸 c 和单元边缘 k。此外,其他参数的影响,包括偏置的入射波角,通过有限元模拟获得和分析。通过对各种参数的影响进行分析和综合比较,得到最佳的参数组合,以实现声学透镜的最佳聚焦性能。实验结果表明,优化后的声透镜的聚焦强度比未优化的提高了近90%,证明了本文正交试验优化方法的有效性。
更新日期:2020-12-01
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