| 在线测量声衬声阻抗的双传声器法 |
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| 引用本文： | 王光发,王显伟,邵新慧,商一齐,闫欢.在线测量声衬声阻抗的双传声器法[J].航空计测技术,2007,27(2):16-19. |
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| 作者姓名： | 王光发 王显伟 邵新慧 商一齐 闫欢 |
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| 作者单位： | 中国一航北京长城计量测试技术研究所 北京100095 |
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| 摘 要： | 双传声器法是工程上在线测量声衬声阻抗的重要方法,为解决实用声衬蜂窝尺寸过小而无法直接嵌入传声器的问题,本文设计了探针传声器,通过外径1.5 mm的探针将声衬表面和背腔声压信号引出.在对探针传声器进行严格校准后,应用双传声器法测量了共振腔和实用蜂窝夹层声衬的声阻抗,并与理论结果进行了对比分析.
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| 关 键 词： | 声衬 声阻抗 双传声器法 探针传声器 在线测量 声衬 声阻抗 双传声器法 Measurement Acoustic Impedance Method 分析 结果 理论 蜂窝夹层 共振腔 应用 校准 声压信号 背腔 表面 外径 探针 设计 |
| 文章编号： | 1002-6061(2007)02-0016-04 |
| 修稿时间： | 2006-11-10 |
In Situ Bimicrophone Method for Acoustic Impedance Measurement |
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| WANG Guang-fa,WANG Xian-wei,SHAO Xin-hui,SHANG Yi-qi,YAN Huan.In Situ Bimicrophone Method for Acoustic Impedance Measurement[J].Aviation Metrology & Measurement Technology,2007,27(2):16-19. |
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| Authors: | WANG Guang-fa WANG Xian-wei SHAO Xin-hui SHANG Yi-qi YAN Huan |
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| Abstract: | The bimicrophone method is an important in situ method to measure the acoustic impedance of acoustic liner,which is going to be investigated in this paper.Because the hole of the honeycomb is too small for microphone to be inserted in,a probe microphone,using a slight probe to lead the pressure out to be measured,is designed.After strictly calibration,the bimicrophone method is used to measure the acoustic impedance of a resonant cavity and a honeycomb perforated liner.And the experiment data are compared with the theoretical results. |
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| Keywords: | acoustic liner acoustic impedance bimicrophone method probe-microphone |
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