...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of thermal stresses >Acoustic response characterization of thermoacoustic CNT thin film arrays
【24h】

Acoustic response characterization of thermoacoustic CNT thin film arrays

机译：热声CNT薄膜阵列的声响应表征

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A new model for a thermoacoustic transducer array with high acoustic beam directivity applying devised carbon nanotube (CNT) thin films is developed. Analytical exact solutions of acoustic pressure field for linear and planar arrays are derived by constructing a new spherical thermoacoustic model. The beamwidth and side-to-main lobe ratios are defined and used as the criteria for determining the optimal array design parameters. The key influencing factors including input frequency, element number, element length and inter-element spacing on the acoustic performance and characteristics are extensively investigated. A comparison between theoretical prediction and experiment is presented to verify the analytical model and very good agreement is reported. The numerical result indicates that increasing the input frequency, element length and inter-element spacing improves the main lobe sharpness while at the same time it lowers the energy efficiency for a fixed element number. It is recommended the largest possible element length, inter-element spacing and element number should be adopted to produce a higher acoustic pressure and better acoustic directivity while meeting the energy efficiency requirement.
机译：开发了一种新的热声换能器阵列模型，该模型采用设计的碳纳米管（CNT）薄膜，具有高声束指向性。通过构建新的球形热声模型，得出了线性和平面阵列声压场的解析精确解。定义了波束宽度和旁瓣到主瓣的比率，并将其用作确定最佳阵列设计参数的标准。广泛研究了影响输入频率，元件数量，元件长度和元件间间距对声学性能和特性的关键影响因素。进行了理论预测与实验的比较以验证分析模型，并报告了很好的一致性。数值结果表明，增加输入频率，元素长度和元素间间距可提高主瓣的清晰度，同时降低固定元素数量的能量效率。建议采用最大可能的元件长度，元件间间距和元件数，以在满足能效要求的同时产生更高的声压和更好的声指向性。

著录项

  • 来源
    《Journal of thermal stresses》 |2018年第12期|1525-1537|共13页
  • 作者

    Xu Wang; Zhou Zhenhuan; Tong Zhenzhen; Lim C. W.; Xu Xinsheng;

  • 作者单位

    Dalian Univ Technol, State Key Lab Struct Anal Ind Equipment, Dept Engn Mech, Int Res Ctr Computat Mech, Dalian, Peoples R China;

    Dalian Univ Technol, State Key Lab Struct Anal Ind Equipment, Dept Engn Mech, Int Res Ctr Computat Mech, Dalian, Peoples R China;

    Dalian Univ Technol, State Key Lab Struct Anal Ind Equipment, Dept Engn Mech, Int Res Ctr Computat Mech, Dalian, Peoples R China;

    City Univ Hong Kong, Dept Architecture & Civil Engn, Hong Kong, Peoples R China;

    Dalian Univ Technol, State Key Lab Struct Anal Ind Equipment, Dept Engn Mech, Int Res Ctr Computat Mech, Dalian, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Acoustic transducer array; analytical solution; carbon nanotube thin film; high directivity; thermoacoustic;

    机译：声换能器阵列;分析溶液;碳纳米管薄膜;高方向性;热声;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号