使用压电陶瓷换能器的超声剪切波的指向性和可激发性——数值建模与实验研究

Directivity and Excitability of Ultrasonic Shear Waves Using Piezoceramic Transducers-Numerical Modeling and Experimental Investigations.

作者信息

Aleksiewicz-Drab Emil, Ziaja-Sujdak Aleksandra, Radecki Rafał, Staszewski Wiesław J

机构信息

Wave Propagation and Signal Processing (WPSP), Department of Physics, KU Leuven-Campus Kulak, 8500 Kortrijk, Belgium.

AGH University of Krakow, Faculty of Mechanical Engineering and Robotics, Department of Robotics and Mechatronics, Al. Mickiewicza 30, 30-059 Kraków, Poland.

出版信息

Sensors (Basel). 2024 May 27;24(11):3462. doi: 10.3390/s24113462.

DOI:10.3390/s24113462

PMID:38894253

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11174865/

Abstract

In this paper, piezoceramic-based excitation of shear horizontal waves is investigated. A thickness-shear d piezoceramic transducer is modeled using the finite-element method. The major focus is on the directivity and excitability of the shear horizontal fundamental mode with respect to the maximization of excited shear and minimization of Lamb wave modes. The results show that the geometry of the transducer has more effect on the directivity than on the excitability of the analyzed actuator. Numerically simulated results are validated experimentally. The experimental results show that transducer bonding significantly affects the directivity and amplitude of the excited modes. In conclusion, when the selected actuator is used for shear excitation, the best solution is to tailor the transducer in such a way that at the resonant frequency the desired directivity is achieved.

摘要

本文研究了基于压电陶瓷的水平剪切波激励。采用有限元方法对厚度剪切型d压电陶瓷换能器进行建模。主要关注水平剪切基模的指向性和可激发性，以实现激发剪切的最大化和兰姆波模式的最小化。结果表明，换能器的几何形状对所分析的致动器的指向性影响比对可激发性的影响更大。数值模拟结果通过实验得到验证。实验结果表明，换能器的粘结对激发模式的指向性和幅度有显著影响。总之，当所选致动器用于剪切激励时，最佳解决方案是以在谐振频率下实现所需指向性的方式定制换能器。