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Diagonal Piezoelectric Sensor on Cylindrical Shells Excited by Piezoelectric Actuator

[+] Author Affiliations
N. W. Shen

Shanghai JiaoTong University, Shanghai, China

X. F. Zhang, H. Li

Zhejiang University, Hangzhou, China

Paper No. IMECE2016-66545, pp. V04BT05A055; 10 pages
doi:10.1115/IMECE2016-66545
From:
  • ASME 2016 International Mechanical Engineering Congress and Exposition
  • Volume 4B: Dynamics, Vibration, and Control
  • Phoenix, Arizona, USA, November 11–17, 2016
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5055-8
  • Copyright © 2016 by ASME

abstract

A model of piezoelectric sensor based on cylindrical shell is designed in this paper. In this model, a rectangular piezoelectric patch is diagonally attached on the thin cylindrical shell as the sensing patch. To evaluate the output of sensing signal, the model is driven by piezoelectric actuator. Sensing and actuating mechanisms are formulated, and the governing equations are derived. To evaluate the contributions of strain components, the sensing signal is decomposed into six components. It is shown that the signal components vary with the orientation angles of sensing patches, so is the total sensing signal. Theoretical results show that shear strain contributes to sensing signal output when the sensing patch is diagonally attached. Then these results are experimentally validated. The transverse displacements and sensing voltages of sensing patch with three different orientations were measured, the sensitivity was calculated. All these analytical data can be used to optimize the piezoelectric sensor design.

Copyright © 2016 by ASME

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