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Photomechanics pp 273–293Cite as

Long-Gage Fiber-Optic Sensors for Structural Monitoring

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Part of the book series: Topics in Applied Physics ((TAP,volume 77))

Abstract

Long-gage and distributed sensors take advantage of the ability of optical fibers to guide light signals over large distances and following sinuous paths. This allows the measurement of deformations and temperatures inside or at the surface of structures. The sensors can be arranged into a network that mimics the nervous system of our body and monitors the health of the structure. Long-gage and distributed sensors are ideal for the global monitoring of large structures, where they allow a good coverage of the structure with reduced number of sensors and little a priori knowledge on its degradation modes. Long-gage sensors give an integrated or average measurement of strain or temperature over lengths of typically a few tens of centimeters to a few tens of meters. Interferometric and microbending sensors are typical examples of this category. On the other hand, distributed sensors allow the measurement of multiple points along a single fiber. These sensors are mostly based on different types of light scattering including Rayleigh, Raman and Brillouin. Both types of sensors have already found niche applications where their characteristics and performance surpass those of conventional sensors.

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Author information

Authors and Affiliations

  1. Smartec SA, via al Molino 6, CH-6916, Grancia, Switzerland

    Daniele Inaudi

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  1. Daniele Inaudi
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Editor information

Editors and Affiliations

  1. Stress Analysis Laboratory IMAC-DGC, Swiss Federal Institute of Technology, 1015, Lausanne, Switzerland

    Pramod K. Rastogi

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© 2000 Springer-Verlag Berlin Heidelberg

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Inaudi, D. (2000). Long-Gage Fiber-Optic Sensors for Structural Monitoring. In: Rastogi, P.K. (eds) Photomechanics. Topics in Applied Physics, vol 77. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-48800-6_8

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  • DOI: https://doi.org/10.1007/3-540-48800-6_8

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-65990-7

  • Online ISBN: 978-3-540-48800-2

  • eBook Packages: Springer Book Archive

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