| A hybrid magnetostrictive-piezoelectric barrel-stave projector |
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| 作者姓名： | CHAI Yong MO Xiping LIU Yongping CUI Zheng |
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| 作者单位： | [1]Institute of Acoustics, Chinese Academy of Sciences Beijing 100080 [2]Graduate School of the Chinese Academy of Sciences Beijing 100029, Chinese Academy of Sciences Beijing 100080 |
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| 摘 要： | A hybrid magnetostrictive-piezoelectric barrel-stave projector is designed and developed. The new type transducer is driven by the union of rare-earth giant magnetostrictive material Terfenol-D and PZT piezoelectric ceramic. Combining the advantages of low frequency performance within a compact size, it proves that the hybrid projector has a much broader band and higher sound power than that with single magnetostrictive or piezoelectric driver by the simulated and measured results. The prototype of the hybrid projector has a size of 88 mm in outside diameter and 316 mm in length, with an underwater resonant frequency of 1.30 kHz, Q factor of 1.43 for -3 dB bandwidth, and transmitting voltage response level of 135.1 dB at the resonant frequency.
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| 关 键 词： | 磁致伸缩-压电传感器 声学工程 磁致伸缩材料 压电陶瓷 |
| 收稿时间： | 2006-01-11 |
| 修稿时间： | 2006-01-112006-03-16 |
A hybrid magnetostrictive-piezoelectric barrel-stave projector |
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| Authors: | CHAI Yong MO Xiping LIU Yongping CUI Zheng |
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| Abstract: | A hybrid magnetostrictive-piezoelectric barrel-stave projector is designed and developed. The new type transducer is driven by the union of rare-earth giant magnetostrictive material Terfenol-D and PZT piezoelectric ceramic. Combining the advantages of low frequency performance within a compact size, it proves that the hybrid projector has a much broader band and higher sound power than that with single magnetostrictive or piezoelectric driver by the simulated and measured results. The prototype of the hybrid projector has a size of 88 mm in outside diameter and 316 mm in length, with an underwater resonant frequency of 1.30 kHz, Q factor of 1.43 for -3 dB bandwidth, and transmitting voltage response level of 135.1 dB at the resonant frequency. |
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