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Modal analysis of piezoelectrically actuated plates with built-in stress by computationally augmented interferometric experiments

Abstract

The conventional laser doppler vibrometers for modal analysis of micro-structures are expensive and sometimes inaccessible. In this work, a compact, fiber-based interferometric setup is used to carry out the modal analysis of initially deflected piezo-actuated micro-plates with different designs. The finite element method provides actual mode shapes visualization in the frequency range up to 100 kHz using the spectral results of vibration measurements performed at a few selected spots of the plate. This method is capable of finding the resonance frequencies and distinguishing the mode shapes. It has also allowed us to investigate the impact of bias voltage on the actual values of the resonance frequencies.
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Category

Academic article

Language

English

Author(s)

  • Hamed Salmani
  • Elisabetta Bodo
  • Ulrik Hanke
  • Andreas Vogl
  • Shruti Jain
  • Sabina Merlo
  • Einar Halvorsen

Affiliation

  • SINTEF Digital / Smart Sensors and Microsystems
  • University of Pavia
  • University of South-Eastern Norway

Year

2022

Published in

Sensors and Actuators A-Physical

ISSN

0924-4247

Volume

337

View this publication at Norwegian Research Information Repository