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Proceedings Paper

Structural health monitoring of composite-based UAVs using simultaneous fiber optic interrogation by static Rayleigh-based distributed sensing and dynamic fiber Bragg grating point sensors
Author(s): Moshe Tur; Ido Sovran; Arik Bergman; Avi Motil; Osher Shapira; Uri Ben-Simon; Iddo Kressel
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Paper Abstract

Embedded fiber-optic strain sensing networks for airworthy assessment of operational Unmanned Aerial Vehicles (UAVs) are presented. Sensing is based on in-flight fiber Bragg grating technology, as well as on on-ground Rayleigh backscattering distributed strain sensing. While the in-flight instrumentation monitors loads, looking for excessive values, the Rayleigh-based technique is used for high spatial resolution strain distribution along the UAV wings, under prescribed loading. Consistency of measurements over time indicates structural integrity. Simultaneous strain measurements using both distributed Rayleigh and fiber Bragg gratings, on the same fiber, promises to combine high spatial resolution, though practically static measurements with dynamic, though discrete ones.

Paper Details

Date Published: 28 September 2015
PDF: 4 pages
Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 96340P (28 September 2015); doi: 10.1117/12.2195173
Show Author Affiliations
Moshe Tur, Tel Aviv Univ. (Israel)
Ido Sovran, Tel Aviv Univ. (Israel)
Arik Bergman, Tel Aviv Univ. (Israel)
Avi Motil, Tel Aviv Univ. (Israel)
Osher Shapira, Ben Gurion International Airport (Israel)
Uri Ben-Simon, Ben Gurion International Airport (Israel)
Iddo Kressel, Ben Gurion International Airport (Israel)

Published in SPIE Proceedings Vol. 9634:
24th International Conference on Optical Fibre Sensors
Hypolito José Kalinowski; José Luís Fabris; Wojtek J. Bock, Editor(s)

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