陶瓷体积分数对压电换能器性能影响  

Effect of Ceramic Volume Fraction on the Performance of Piezoelectric Transducers

作　　者：李星 王丽坤[1] 仲超[1] 张彦军 LI Xing;WANG Likun;ZHONG Chao;ZHANG Yanjun(Beijing Key Laboratory for Sensor, Beijing Information Science and Technology University, Beijing 100192, China)

机构地区：[1]北京信息科技大学北京市传感器重点实验室

出　　处：《压电与声光》2019年第3期400-404,共5页Piezoelectrics & Acoustooptics

基　　金：国家自然科学基金资助项目(61471047,61671068);北京市创新能力能力提升计划(TJSHG201510772015)

摘　　要：研究了压电陶瓷体积分数(vc)对1-3型压电复合材料换能器收发性能的影响。换能器的收发性能主要由发射电压响应和接收灵敏度来衡量。通过有限元仿真和实验,分析了换能器的接收灵敏度和发射响应随压电陶瓷体积分数变化的规律,并将实验与有限元计算结果进行对比,二者基本吻合。实验和仿真结果表明,当陶瓷体积分数vc<0.4时,换能器的发射电压响应呈增长趋势;当vc=0.4~0.7时,发射电压响应趋于稳定值(173dB)。当vc=0.2~0.4时,接收灵敏度呈增长趋势,在vc在0.4附近达到-180.4dB;当vc=0.4~0.6时,接收灵敏度逐渐减小。The influence of the piezoceramic volume fraction ( v c ) on the performance of the 1-3 piezoelectric composite transducer is studied. The transceiver performance is mainly measured by the transmitting voltage response and receiving sensitivity. Through the finite element simulation and experiment, the law of the transducer’s receiving sensitivity and transmitting response varying with the volume fraction of piezoelectric ceramics is analyzed, and the results of experiment and finite element calculation are compared, which are basically in agreement with each other. The experimental and simulation results show that when v c <0.4, the transmitting voltage response of the transducer shows a growing trend. When v c is between 0.4 and 0.7, the transmitting voltage response tends to a stable value of 173 dB. When v c is between 0.2 and 0.4, the receiver sensitivity shows an increasing trend. When v c is around 0.4, it reaches -180.4 dB;while when the v c is between 0.4 and 0.6, the receiving sensitivity gradually decreases.

关 键 词：压电陶瓷体积分数 1-3型复合材料换能器 有限元仿真 发射电压响应 灵敏度 

分 类 号：TN384[电子电信—物理电子学] TB564[交通运输工程—水声工程]