论文部分内容阅读
An innovative design of a “Fish-mouth” flextensional transducer is proposed, it is utilized an 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 the 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 than 3, transmitting current response level: 182 dB. A free-flooded cavity with compliant material is used to achieve depth capability.
An innovative design of a “Fish-mouth ” flextensional transducer is proposed, it is utilized an 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 the 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 Frequency band: Q factor for - 3 dB bandwidth less than 3, transmitting current response level: 182 dB. A free-flooded cavity with compliant material is used to achieve depth capability.