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Proceedings Paper

Damage detection in a cantilever beam under dynamic conditions using a distributed, fast, and high spatial resolution Brillouin interrogator
Author(s): A. Motil; R. Davidi; A. Bergman; Y. Botsev; M. Hahami; M. Tur
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Paper Abstract

The ability of Brillouin-based fiber-optic sensing to detect damage in a moving cantilever beam is demonstrated. A fully computerized, distributed and high spatial resolution (10cm) Fast-BOTDA interrogator (50 full-beam Brillouin-gain-spectra per second) successfully directly detected an abnormally stiffened (i.e., ‘damaged’) 20cm long segment in a 6m Aluminum beam, while the beam was in motion. Damage detection was based on monitoring deviations of the measured strain distribution along the beam from that expected in the undamaged case.

Paper Details

Date Published: 30 May 2016
PDF: 4 pages
Proc. SPIE 9916, Sixth European Workshop on Optical Fibre Sensors, 99162X (30 May 2016); doi: 10.1117/12.2236790
Show Author Affiliations
A. Motil, Tel-Aviv Univ. (Israel)
R. Davidi, Tel-Aviv Univ. (Israel)
A. Bergman, Tel-Aviv Univ. (Israel)
Y. Botsev, DSIT Solutions LTD (Israel)
M. Hahami, DSIT Solutions LTD (Israel)
M. Tur, Tel-Aviv Univ.. (Israel)

Published in SPIE Proceedings Vol. 9916:
Sixth European Workshop on Optical Fibre Sensors
Elfed Lewis, Editor(s)

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