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Proceedings Paper

Measurement of tunnel-ceiling and side-wall displacements using arc-shaped beam and fiber Bragg grating sensors
Author(s): Hiroshi Naruse; Shinya Furukawa; Takanori Nishino
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Paper Abstract

A method is presented for measuring the displacement of a tunnel's ceiling and side walls using arc-shaped beams and fiber Bragg grating (FBG) sensors. The beams are installed inside the tunnel so that the displacements of the ceiling and side walls are transferred to the beams. The displacements are computed using mechanical analysis of the strains they produce on the surface of the beams. Table-top experiments demonstrated that the method is valid. This method can be used to construct a system for monitoring the displacements in tunnels with various cross-sections.

Paper Details

Date Published: 17 October 2012
PDF: 4 pages
Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 842133 (17 October 2012); doi: 10.1117/12.974833
Show Author Affiliations
Hiroshi Naruse, Mie Univ. (Japan)
Shinya Furukawa, Mie Univ. (Japan)
Takanori Nishino, Mie Univ. (Japan)

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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