Investigation of Deep-Sea Longitudinal Vibration Cavity Resonant Coupling Transducers Made of Relaxor Ferroelectric Single-Crystal Material
Investigation of Deep-Sea Longitudinal Vibration Cavity Resonant Coupling Transducers Made of Relaxor Ferroelectric Single-Crystal Material
复制标题
弛豫铁电单晶材料深海纵向振动谐振腔耦合换能器的研究
DOI：
10.1109/jsen.2023.3309552
复制
发表时间：
2023-10
影响因子：
4.3
通讯作者：
Zhengyao He;Qiang Shi;Tianjun Zhou;Zihao Yu;Yushi Wang
中科院分区：
文献类型：
--
作者：
Zhengyao He;Qiang Shi;Tianjun Zhou;Zihao Yu;Yushi Wang
深海换能器对提高声纳性能具有重要意义，而压电陶瓷换能器在不增加其尺寸的情况下，通过结构优化无法大幅度提高其性能。针对这一问题，我们采用弛豫铁电单晶设计了纵振腔谐振耦合换能器，将纵振和腔振耦合起来，提高了换能器的性能。首先，换能器结构被设计成承受高的流体静压。然后，利用有限元法分析了金属圆柱板对换能器性能的影响，并对金属圆柱板尺寸进行了优化。最后，我们制作了相同尺寸的压电陶瓷和单晶换能器。消声水池实验结果表明，单晶换能器在2.7 kHz处的最大发射电压响应（TVR）为139.9 dB，在1.6-2.7 kHz范围内，TVR比压电陶瓷换能器高9 dB以上，表明单晶换能器具有较好的低频性能。50 MPa耐压试验结果表明，高压前后导纳和TVR基本一致，高压后实测最大源电平为192.9 dB。实验结果表明，该传感器能够承受深海压力，具有良好的压力稳定性。
Deep-sea transducers are of great significance for improving the performance of sonar, and we cannot greatly improve the performance of the piezoelectric ceramic transducers through structural optimization without increasing their size. To solve this problem, we use the relaxor ferroelectric single crystal to design the longitudinal vibration cavity resonant coupling transducer, which couples the longitudinal vibration and cavity vibration to improve the performance. First, the transducer structure is designed to withstand high hydrostatic pressure. Then, the finite element method is used to analyze the influence of the metal cylindrical plate on the transducer performance, and the metal cylindrical plate size is optimized. Finally, we manufacture piezoelectric ceramic and single-crystal transducers of the same size. The experimental result in an anechoic water tank shows that for the single-crystal transducer, the maximum transmitting voltage response (TVR) is 139.9 dB at 2.7 kHz, and the TVR is more than 9 dB higher than that of the piezoelectric ceramic transducer in the 1.6–2.7 kHz region, indicating that the single-crystal transducer has better low-frequency performance. The 50 MPa pressure test result shows that the admittance and TVR are consistent before and after high hydrostatic pressure, and the measured maximum source level (SL) is 192.9 dB after high hydrostatic pressure. The experimental result shows that the transducer can withstand deep-sea pressure and has good pressure stability.