A Terfenol-D “Fish-Mouth” flextensional transducer

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

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

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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