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http://dx.doi.org/10.4313/JKEM.2013.26.2.114

Trajectory of Resonant Displacement of Coupled Vibration Mode Piezoelectric Devices for AE Sensor Application  

Jeong, Yeong-Ho (Department of Electrical Engineering, Korea National University of Transportation)
Shin, Sang-Hoon (Department of Electrical Engineering, Semyung University)
Yoo, Ju-Hyun (Department of Electrical Engineering, Semyung University)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.26, no.2, 2013 , pp. 114-118 More about this Journal
Abstract
In this study, coupled mode piezoelectric devices for AE sensor application with excellent displacement and piezoelectric characteristics were simulated using ATILA FEM program, and then fabricated. Displacements and electromechanical coupling factors of the piezoelectric devices were investigated. The simulation results showed that excellent displacement and electromechanical coupling factor were obtained when the ratio of diameter/thickness was 1.0. The piezoelectric device of ${\Phi}/T$= 1.0 exhibited the optimum values of fr= 406 kHz, displacement= $6.11{\times}10^{-8}[m]$, $k_{eff}$= 0.648. The results show that the coupled vibration mode piezoelectric device is a promising candidate for the application of AE sensor piezoelectric device.
Keywords
AE sensor; Coupled mode; Piezoelectric devices; PZT; ATILA;
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Times Cited By KSCI : 1  (Citation Analysis)
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