低频压电换能器激励导波在轨道中的传播特性研究

Proceedings of the 2014 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications Pub Date : 2014-12-29 DOI:10.1109/SPAWDA.2014.6998623

Yusen Huo, Di Wu, Deng Wei, Hua Xue, Ya-ping Wang, Yong-ping Teng

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引用次数: 2

摘要

本文介绍了压电夹层换能器，根据力电类比法推导出的机电等效电路，得到了前后金属盖板之间的振动比。利用MATLAB编程计算换能器的谐振频率，然后在实验室条件下在1.5m长50kg / m的导轨上进行实验。以夹层换能器和352C33低频加速度传感器分别作为激励单元和接收单元，测量导轨等效阻尼损耗因子，绘制衰减曲线。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Research on propagation characteristics of guided wave in rail excited by low-frequency piezoelectric transducer

This short paper introduced the piezoelectric sandwich transducer and obtained the vibration ratio between the front and back metal covers according to the electromechanical equivalent circuit derived by force and electric analogy method. The transducer's resonance frequency is calculated using MATLAB programming, following by an experiment performed on a 1.5m long 50kg / m rail under laboratory conditions. The rail's equivalent damped loss factor was measured and the attenuation curve was plotted using a sandwich transducer and a 352C33 low frequency acceleration sensor as excitation and receiving units respectively.

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Proceedings of the 2014 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications

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