Tunnel monitoring using multicore displacement sensor

W.N. MacPherson, M. Silva-Lopez, J.S. Barton, A.J. Moore, J.D.C. Jones, D. Zhao, L. Zhang, I. Bennion, N. Metje, D.N. Chapman, C.D.F. Rogers

Research output: Contribution to journalArticle

Abstract

In this paper, we report the first demonstration of multiplexed fibre Bragg grating strain sensors in a multicore fibre for shape measurement and their application to structural monitoring. Sets of gratings, acting as strain gauges, are co-located in the multicore fibre such that they enable the curvature to be determined via differential strain measurement. Multiple sets of these gratings allow the curvature to be measured at several points along the fibre. In this paper, the multicore fibre is configured to measure the deflection of a simple mechanical beam arising from the displacement of concrete tunnel sections. Laboratory tests are presented in which the system was demonstrated capable of displacement measurement with a resolution of ±0.1 mm over a range of several millimetres. © 2006 IOP Publishing Ltd.

Original languageEnglish
Pages (from-to)1180-1185
Number of pages6
JournalMeasurement Science and Technology
Volume17
Issue number5
Early online date13 Apr 2006
DOIs
Publication statusPublished - May 2006

Fingerprint

Tunnel
tunnels
Tunnels
Fiber
Monitoring
Sensor
fibers
Fibers
sensors
Sensors
Gratings
Curvature
Shape Measurement
Strain Sensor
Displacement Measurement
Strain Measurement
Strain Gauge
Displacement measurement
curvature
gratings

Keywords

  • multicore fibre
  • optical fibre
  • sensors
  • structural monitoring

Cite this

MacPherson, W. N., Silva-Lopez, M., Barton, J. S., Moore, A. J., Jones, J. D. C., Zhao, D., ... Rogers, C. D. F. (2006). Tunnel monitoring using multicore displacement sensor. Measurement Science and Technology, 17(5), 1180-1185. https://doi.org/10.1088/0957-0233/17/5/S41
MacPherson, W.N. ; Silva-Lopez, M. ; Barton, J.S. ; Moore, A.J. ; Jones, J.D.C. ; Zhao, D. ; Zhang, L. ; Bennion, I. ; Metje, N. ; Chapman, D.N. ; Rogers, C.D.F. / Tunnel monitoring using multicore displacement sensor. In: Measurement Science and Technology. 2006 ; Vol. 17, No. 5. pp. 1180-1185.
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MacPherson, WN, Silva-Lopez, M, Barton, JS, Moore, AJ, Jones, JDC, Zhao, D, Zhang, L, Bennion, I, Metje, N, Chapman, DN & Rogers, CDF 2006, 'Tunnel monitoring using multicore displacement sensor', Measurement Science and Technology, vol. 17, no. 5, pp. 1180-1185. https://doi.org/10.1088/0957-0233/17/5/S41

Tunnel monitoring using multicore displacement sensor. / MacPherson, W.N.; Silva-Lopez, M.; Barton, J.S.; Moore, A.J.; Jones, J.D.C.; Zhao, D.; Zhang, L.; Bennion, I.; Metje, N.; Chapman, D.N.; Rogers, C.D.F.

In: Measurement Science and Technology, Vol. 17, No. 5, 05.2006, p. 1180-1185.

Research output: Contribution to journalArticle

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AU - MacPherson, W.N.

AU - Silva-Lopez, M.

AU - Barton, J.S.

AU - Moore, A.J.

AU - Jones, J.D.C.

AU - Zhao, D.

AU - Zhang, L.

AU - Bennion, I.

AU - Metje, N.

AU - Chapman, D.N.

AU - Rogers, C.D.F.

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MacPherson WN, Silva-Lopez M, Barton JS, Moore AJ, Jones JDC, Zhao D et al. Tunnel monitoring using multicore displacement sensor. Measurement Science and Technology. 2006 May;17(5):1180-1185. https://doi.org/10.1088/0957-0233/17/5/S41