在线测量声衬声阻抗的双传声器法
In Situ Bimicrophone Method for Acoustic Impedance Measurement
  修订日期:2006-11-10
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中文摘要:
      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.
英文摘要:
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.
王光发  王显伟  邵新慧  商一齐  闫欢
中国一航北京长城计量测试技术研究所 北京100095
中文关键词:  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
英文关键词:acoustic liner,acoustic impedance,bimicrophone method,probe-microphone
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DOI:
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].计测技术,2007,27(2):16~19.
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