Measurement of piezoelectric transformer vibrations by digital holography

  title={Measurement of piezoelectric transformer vibrations by digital holography},
  author={P. Psota and V. Ledl and R. Dole{\vc}ek and J. Erhart and V. Kopeck{\'y}},
  journal={IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control},
  • P. Psota, V. Ledl, +2 authors V. Kopecký
  • Published 2012
  • Physics, Medicine
  • IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
  • A method for the measurements of the out-of-plane displacement on the surface of vibrating object is presented herein. This method is based on frequency-shifted time-averaged digital holographic interferometry, employing the principle of phase shifting. This approach allows for significant noise reduction, which results in high sensitivity of measurements. This method makes it possible to measure vibrations with amplitudes in the nanometer range over the whole measured surface. This method was… CONTINUE READING
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