串叠复合材料圆环阵水声换能器设计及制备

发布时间：2019-02-26 12:33

【摘要】：提出了一种新型高频宽带压电复合材料圆环阵换能器,综合采用了压电复合材料和多模耦合振动来拓展换能器带宽。通过ANSYS软件对其进行有限元建模仿真,得到了该换能器谐振频率和带宽随压电陶瓷圆环厚度、高度和平均半径的变化规律,并根据仿真结果确定了换能器敏感元件最优设计方案。由最优参数加工得到用于叠堆的两个压电复合材料圆环,并将两压电复合材料圆环轴向叠堆,最终制作了双圆环叠堆压电复合材料水声换能器。经测试,该新型换能器形成了明显的双模耦合振动,其-3dB工作带宽为320~410kHz,最大发送电压响应达147.8dB。研究结果表明,利用复合材料和多模耦合振动可以大幅度拓展高频换能器的带宽。
[Abstract]:A new type of high frequency broadband piezoelectric composite ring array transducer is presented in this paper. Piezoelectric composite material and multi-mode coupled vibration are used to expand the bandwidth of the transducer. The resonant frequency and bandwidth of the transducer varying with the thickness, height and average radius of piezoelectric ceramic rings are obtained by finite element modeling simulation with ANSYS software, and the results show that the resonant frequency and bandwidth of the transducer vary with the thickness, height and average radius of piezoelectric ceramic rings. According to the simulation results, the optimal design scheme of transducer sensor is determined. Two piezoelectric composite rings for stacking were obtained by processing the optimal parameters, and the two piezoelectric composite rings were stacked in axial direction. Finally, the hydroacoustic transducers of double-ring stacked piezoelectric composite materials were fabricated. The test results show that the double mode coupling vibration of the new transducer is formed. The working bandwidth of the new transducer is 320 kHz and the maximum transmission voltage response is 147.8 dB. The working bandwidth of the new transducer is 320 kHz and the maximum transmission voltage response is 147.8 dB. The results show that the bandwidth of high frequency transducers can be greatly expanded by using composite materials and multi-mode coupled vibration.
【作者单位】：北京信息科技大学传感器重点实验室;
【基金】：国家自然科学基金资助项目(61302015,61471047) 北京市教委创新能力提升计划基金资助项目(PXM2015_014224_0000280) 北京市属高校青年拔尖人才培育计划基金资助项目(CIT&TCD201504053)
【分类号】：TB565.1

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