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Proceedings Paper

Interrogation of fibre Bragg gratings through a fibre optic rotary joint on a geotechnical centrifuge
Author(s): Ricardo Correia; Stephen W. James; Alec Marshall; Charles Heron; Sergiy Korposh
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Paper Abstract

The monitoring of an array of fibre Bragg gratings (FBGs) strain sensors was performed through a single channel, single mode fibre optic rotary joint (FORJ) mounted on a geotechnical centrifuge. The array of three FBGs was attached to an aluminum plate that was anchored at the ends and placed on the model platform of the centrifuge. Acceleration forces of up to 50g were applied and the reflection signal of the monitored FBGs recorded dynamically using a 2.5kHz FBG interrogator placed outside the centrifuge. The use of a FORJ allowed the monitoring of the FBGs without submitting the FBG interrogator to the high g-forces experienced in the centrifuge.

Paper Details

Date Published: 30 May 2016
PDF: 4 pages
Proc. SPIE 9916, Sixth European Workshop on Optical Fibre Sensors, 99162B (30 May 2016); doi: 10.1117/12.2236979
Show Author Affiliations
Ricardo Correia, The Univ. of Nottingham (United Kingdom)
Stephen W. James, Cranfield Univ. (United Kingdom)
Alec Marshall, The Univ. of Nottingham (United Kingdom)
Charles Heron, The Univ. of Nottingham (United Kingdom)
Sergiy Korposh, The Univ. of Nottingham (United Kingdom)

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

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