Mechanical reliability of optical fibre sensors for tunnel displacement monitoring

Stephen N. Kukureka; Pifeng Miao; Nicole Metje; David N. Chapman; Christopher D. F. Rogers; Philip R. Henderson

doi:10.1117/12.623657

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23 May 2005 Mechanical reliability of optical fibre sensors for tunnel displacement monitoring

Stephen N. Kukureka, Pifeng Miao, Nicole Metje, David N. Chapman, Christopher D. F. Rogers, Philip R. Henderson

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Proceedings Volume 5855, 17th International Conference on Optical Fibre Sensors; (2005) https://doi.org/10.1117/12.623657
Event: 17th International Conference on Optical Fibre Sensors, 2005, Bruges, Belgium

Abstract

This work presents a study of the mechanical properties of optical fibre sensors based on fibre Bragg gratings for application in the in situ monitoring of displacements in tunnels. Tests were performed on fibres and gratings in both dry and humid environments. The tests encompassed both dynamic fatigue (constant stress rate) in both two-point bend and in tensile loading and static fatigue (constant stress conditions). The results indicate that the fibres and gratings are expected to have a very long lifetime under the likely mechanical and environmental conditions.

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Stephen N. Kukureka, Pifeng Miao, Nicole Metje, David N. Chapman, Christopher D. F. Rogers, and Philip R. Henderson "Mechanical reliability of optical fibre sensors for tunnel displacement monitoring", Proc. SPIE 5855, 17th International Conference on Optical Fibre Sensors, (23 May 2005); https://doi.org/10.1117/12.623657

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