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Proceedings Paper

Stress wave amplitude measurements for calibration of structural health monitoring sensors
Author(s): Eddie W. O'Brien
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Paper Abstract

One of the Airbus designed systems for Structural Health Monitoring utilizes small piezo-electric sensors to detect the vibration or stress wave that emanates from a growing crack in metallic structures. The signal must be detected amongst a plethora of other structural vibrations or noises and phenomenological filters are used isolate the crack generated signal. For the application to Civil Aircraft monitoring it is vital to know the sensitivity and consistency of all the PZT sensors used. The amplitude of vibration from a growing crack has been measured by a special laser based interferometer in order to form the basis of a National Standard to regulate quality of the sensors and the subsequent data.

Paper Details

Date Published: 14 February 2005
PDF: 4 pages
Proc. SPIE 5776, Eighth International Symposium on Laser Metrology, (14 February 2005); doi: 10.1117/12.611638
Show Author Affiliations
Eddie W. O'Brien, Airbus UK (United Kingdom)

Published in SPIE Proceedings Vol. 5776:
Eighth International Symposium on Laser Metrology
R. Rodriguez-Vera; F. Mendoza-Santoyo, Editor(s)

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