On calibration of piezoelectric sensors with laser doppler vibrometer
Name
10.0006445.pdf
Description
Published version
Size
3.57 MB
Format
Adobe PDF
Checksum (MD5)
8f7d400c48d51b604a2c911dbc3bab0c
Author(s)
Ghaffari, HO
Mok, U
Pec, Matej
Date Issued
2021
Journal
The Journal of the Acoustical Society of America
Publisher
Acoustical Society of America (ASA)
Citation
Ghaffari, HO, Mok, U and Pec, Matej. 2021. "On calibration of piezoelectric sensors with laser doppler vibrometer." The Journal of the Acoustical Society of America, 150 (4).
Version
Final published version
Abstract
We present a method for calibrating piezoelectric sensors using a laser Doppler vibrometer. Our method uses an average of Fourier transform terms of the recorded signal from the piezoelectric sensor, which is compared with the laser probe measurement in the overlapping frequency range. We use our method to calibrate the response of miniature needle sensors employed in acoustic emission testing to several different excitation sources of stress waves in the frequency range of 20-300 kHz. We demonstrate that the output of the piezoelectric sensors can be accurately scaled with particle velocity.
MIT Department
Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1121/10.0006445
