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Proceedings Paper

Analysis of fiber optic sensor application to precursory acoustic signals detection in rockfall events
Author(s): L. Schenato; L. Palmieri; L. Vianello; G. Marcato; G. Gruca; T. van de Watering; D. Iannuzzi; A. Pasuto; A. Galtarossa
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Paper Abstract

Two fiber optic sensors (FOSs) for detection of precursory acoustic emissions in rockfall events are proposed and experimentally characterized. While both sensors are interferometric, the first one use a fiber coil as sensing element, whereas the second sensor exploits a micro-machined cantilever carved on the top of a ferrule. Preliminary experimental comparison with standard piezo-electric transducers shows the viability of such FOSs for acoustic emission monitoring in rock masses.

Paper Details

Date Published: 7 November 2012
PDF: 4 pages
Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 8421BG (7 November 2012); doi: 10.1117/12.975142
Show Author Affiliations
L. Schenato, Italian National Research Council (Italy)
L. Palmieri, Italian National Research Council (Italy)
L. Vianello, Univ. of Padova (Italy)
G. Marcato, Italian National Research Council (Italy)
G. Gruca, Vrije Univ. (Netherlands)
T. van de Watering, Vrije Univ. (Netherlands)
D. Iannuzzi, Vrije Univ. (Netherlands)
A. Pasuto, Italian National Research Council (Italy)
A. Galtarossa, Univ. of Padova (Italy)

Published in SPIE Proceedings Vol. 8421:
OFS2012 22nd International Conference on Optical Fiber Sensors
Yanbiao Liao; Wei Jin; David D. Sampson; Ryozo Yamauchi; Youngjoo Chung; Kentaro Nakamura; Yunjiang Rao, Editor(s)

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