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莫喜平. Terfenol-D鱼唇式弯张换能器[J]. 声学学报, 2001, 26(1): 25-28. DOI: 10.15949/j.cnki.0371-0025.2001.01.005
引用本文: 莫喜平. Terfenol-D鱼唇式弯张换能器[J]. 声学学报, 2001, 26(1): 25-28. DOI: 10.15949/j.cnki.0371-0025.2001.01.005
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MO Xiping. A Terfenol-D “Fish-Mouth” flextensional transducer[J]. ACTA ACUSTICA, 2001, 26(1): 25-28. DOI: 10.15949/j.cnki.0371-0025.2001.01.005
Citation: MO Xiping. A Terfenol-D “Fish-Mouth” flextensional transducer[J]. ACTA ACUSTICA, 2001, 26(1): 25-28. DOI: 10.15949/j.cnki.0371-0025.2001.01.005
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Terfenol-D鱼唇式弯张换能器

A Terfenol-D “Fish-Mouth” flextensional transducer

    摘要
  • 摘要: 提出了一种“鱼唇式”弯张换能器的设计方案,采用变高度椭圆壳体,这样的壳体兼有振幅放大和高度加权放大的“双重放大”作用,并设计制作了Terfenol-D“鱼唇式”弯张换能器。理论分析和湖上实验结果表明,Tefenol-D“鱼唇式”弯张换能器,具有较低的谐振频率,水中约为 1.1kHz左右;较宽的频带,-3dB带通 Q值低于 3;发射电流响应为 182 dB;采用了溢流腔填充顺性材料可获得较大的工作深度.

     

    Abstract: A innovative design of a "Fish-mouth" flextensionaltransducers is proposed, it is utilized a elliptical shell with variable height. The special shell is provided with amplitude amplification and weighted height amplification effect that is called "double-amplification" effect. A prototype of t he Terfenol-D "Fish-mouth" flextensional transducer is developed. Theoretical analysis and experiments in lake are showed that the "Fish-mouth" flextensional transducer has lower resonant frequency:about 1.1 kHz, wider frequency band:Q factor for -3 dB bandwidth less 3,than 3, transmitting current response level:182 dB. A free-flooded cavity with compliant material is used to achieve depth capability.

     

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