Analysis and experimental verification of dual frequency ultrasonic transducer with contour and thickness vibration modes

被引：3
|
作者：
Shao, Weiwei [1 ,2 ]
Han, Xiao [1 ,2 ]
Li, Peiyang [1 ]
Li, Zhangjian [1 ,2 ]
Lv, Jiabing [1 ,2 ]
Zhu, Xinle [1 ,2 ]
Li, Xiangxin [1 ,2 ]
Shen, Jun [3 ]
Cui, Yaoyao [1 ,2 ]
机构：
[1] Chinese Acad Sci, Suzhou Inst Biomed Engn & Technol, Med Acoust Technol Dept, Suzhou 215163, Jiangsu, Peoples R China
[2] Univ Sci & Technol China, Sch Biomed Engn SuZhou, Div Life Sci & Med, Suzhou, Peoples R China
[3] Nanjing Med Univ, Suzhou Hosp, Suzhou Municipal Hosp, Suzhou, Peoples R China
来源：
APPLIED ACOUSTICS | 2022年 / 190卷
基金：
国家重点研发计划;
关键词：
The dual frequency transducer; Contour vibration mode; Thickness mode; Finite element analysis; PIEZOELECTRIC TRANSFORMER; IVUS TRANSDUCER;
D O I：
10.1016/j.apacoust.2022.108633
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
The contour mode is introduced with normal thickness mode to generate dual frequency ultrasonic waves in a single element transducer. The proposed dual frequency transducers are analyzed and designed by finite element analysis. Based on the results of simulation analysis, the four transducers prototypes are fabricated and tested. For dual frequency transducer with optimized matching layer, the pulse echo characteristics of low frequency part are similar with the comparison characteristics of 1-3 composites transducer. The dual frequency transducer still simultaneously owns effective high frequency part. The results demonstrate that the proposed contour vibration mode can work with thickness vibration mode to realize dual frequency with a high performance. (C) 2022 Elsevier Ltd. All rights reserved.
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页数：7
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