二维声透镜实验研究
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- 英文论文题名：Experimental research on two-dimensional acoustic lens
- 论文作者：高东宝 ; 刘选俊 ; 田章福 ; 曾新吾
- 英文论文作者：GAO Dong-bao ; LIU Xuan-jun ; TIAN Zhang-fu ; ZENG Xin-wu ; Academy of Ocean Science and Engineering ; National University of Defense Technology
- 年：2016
- 作者机构：国防科技大学海洋科学与工程研究院;
- 论文关键词：声透镜 ; 二维声场 ; 声聚焦 ; 声聚束
- 英文论文关键词：acoustic lens ; two-dimensional field ; acoustical focalization ; acoustical beam-forming
- 会议召开时间：2016-10-28
- 会议录名称：2016年全国声学学术会议论文集
- 语种：中文
- 分类号：TB51
- 学会代码：OGSM
- 会议名称：2016年全国声学学术会议
- 会议地点：中国湖北武汉
- 主办单位：中国声学学会
- 学会名称：中国声学学会
- 页数：3
- 文件大小：366k
- 原文格式：D
- 会议级别：全国
摘要
基于等效介质理论设计了一种声透镜模型,该模型由四排梯度变化的圆柱形单元构成。针对声透镜模型特点,设计并搭建了一套实验研究平台。平台由信号发生系统,声波导和测量与分析系统组成,可实现声透镜二维聚焦声场的测量。实验中测量了声透镜的二维声场分布及焦点处个方向上的声压级分布情况。实验结果表明,该透镜不但具有较好的声聚焦功能,而且对于声波的聚束辐射效果也很明显。研究结果对提高声能辐射效果,实现声波的远距离传播具有一定意义。
An acoustic lens model is designed based on effective medium theory, which is constructed by four-line gradient cylindrical gratings. The experimental system is also fabricated for the lens, which contains signal generation system, acoustic waveguide and acoustic field measurement and analysis system. In the experiment, the two-dimensional acoustic field of the acoustic lens is measured, and the sound pressure levels along different axis at the focal point are analyzed. The results show that beside excellent focal effect, the acoustic lens can form the incident plane wave to an acoustic beam. This work will be of help for acoustic long-distance propagation.
An acoustic lens model is designed based on effective medium theory, which is constructed by four-line gradient cylindrical gratings. The experimental system is also fabricated for the lens, which contains signal generation system, acoustic waveguide and acoustic field measurement and analysis system. In the experiment, the two-dimensional acoustic field of the acoustic lens is measured, and the sound pressure levels along different axis at the focal point are analyzed. The results show that beside excellent focal effect, the acoustic lens can form the incident plane wave to an acoustic beam. This work will be of help for acoustic long-distance propagation.
引文
[1]Climente A,Torrent D,Sánchez-Dehesa J.Sound focusing by gradient index sonic lenses[J].Appl.Phys.Lett.,2010,97(10):104103.
[2]Li D,Zigoneanu L,Popa B-I,Cummer S A.Design of an acoustic metamaterial lens using genetic algorithms[J].J.Acoust.Soc.Am.,2012,132(4):2823-2833.
[3]孟雷,高东宝,曾新吾.亚波长梯度声透镜聚焦的仿真研究[J].声学技术,2014,33(S2):28-30.
[4]Jimenez N,Romero-Garcia V,Pico R,Cebrecos A,Sanchez-Morcillo V J,Garcia-Raffi L M,Sanchez-Perez J V,Staliunas K.Acoustic Bessel-like beam formation by an axisymmetric grating[J].Eur.Phys.Lett.,2014,106:24005.
[5]Torrent D,Hakansson A,Cervera F,Sanchaz-Dehesa J.Homogenization of Two-Dimensional Clusters of Rigid Rods in Air[J].Phys.Rev.Lett.,2006,96:204302.
[6]杜功焕,朱哲民,龚秀芬.声学基础[M].南京:南京大学出版社,2001,279-283.
[2]Li D,Zigoneanu L,Popa B-I,Cummer S A.Design of an acoustic metamaterial lens using genetic algorithms[J].J.Acoust.Soc.Am.,2012,132(4):2823-2833.
[3]孟雷,高东宝,曾新吾.亚波长梯度声透镜聚焦的仿真研究[J].声学技术,2014,33(S2):28-30.
[4]Jimenez N,Romero-Garcia V,Pico R,Cebrecos A,Sanchez-Morcillo V J,Garcia-Raffi L M,Sanchez-Perez J V,Staliunas K.Acoustic Bessel-like beam formation by an axisymmetric grating[J].Eur.Phys.Lett.,2014,106:24005.
[5]Torrent D,Hakansson A,Cervera F,Sanchaz-Dehesa J.Homogenization of Two-Dimensional Clusters of Rigid Rods in Air[J].Phys.Rev.Lett.,2006,96:204302.
[6]杜功焕,朱哲民,龚秀芬.声学基础[M].南京:南京大学出版社,2001,279-283.