A method on analyzing the performance of a 1-3 piezoelectric composites with non-uniform thickness

被引：0
|
作者：
Sun Y. [1 ]
Zeng D. [1 ]
Zhang C. [1 ]
Xu J. [1 ]
Zhang J. [1 ]
Gong Y. [1 ]
He Q. [1 ]
Gao X. [1 ]
Yang Z. [1 ]
机构：
[1] Chongqing Collaborative Innovation Center for Minimally-invasive and Noninvasive Medicine, College of Biomedical Engineering, Chongqing Medical University, Chongqing
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2019年 / 38卷 / 08期
关键词：
1-3 piezoelectric composites; Equivalent circuit model of the parallel oscillator; Impedance; Non-uniform thickness;
D O I：
10.13465/j.cnki.jvs.2019.08.012
中图分类号：
学科分类号：
摘要：
1-3 piezoelectric composites transducers with non-uniform thickness which have characteristics of wide bandwidth are widely used in the fields of underwater ultrasonic testing, sonic logging, and ultrasonic imaging. In this paper, an equivalent circuit model of a parallel-connected resonator arrays was proposed to analyze the vibration and performance of the transducer. When a 1-3 piezoelectric composite plate was designed to have a gradually varying thickness, the plate could be regarded as composed of parallel-connected oscillator arrays with various thicknesses. And a 3D thickness-stretching vibration model was employed to analyze the single resonator unit. Impedance of non-uniform thickness 1-3 piezoelectric composite transducer was achieved. To verify the theory, a transducer using a flat-concave 1-3 piezoelectric composite plate was fabricated. The experiment results agree well with the theory, indicating that the equivalent circuit model of a parallel resonator array is well suitable for accurately predicting the performance of the 1-3 piezoelectric composite with non-uniform thickness. The transducer bandwidth is mainly determined by on its thickness variation. The research results can be used as guidelines for the design of the transducer with non-uniform thickness. © 2019, Editorial Office of Journal of Vibration and Shock. All right reserved.
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页码：75 / 79
页数：4
相关论文
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