13 September 1994 Low-coherence interferometry for the monitoring of civil engineering structures
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Proceedings Volume 2361, Second European Conference on Smart Structures and Materials; (1994); doi: 10.1117/12.184829
Event: Smart Structures and Materials: Second European Conference, 1994, Glasgow, United Kingdom
Abstract
A measuring system adapted to the needs of civil engineering structural monitoring is presented. It is based on low coherence interferometry in standard singlemode fibers and has a resolution of 5 micrometers , an operational range of 7 cm, stability over long periods (at least 1 year) and insensitivity to variations of the fiber losses. The portable reading unit doesn't need to be connected to the sensing fibers permanently and can thus be used to monitor multiple structures reducing the costs of the instrumentation. This paper presents the operating principle of this system and different techniques used to install the sensing fibers in large concrete structures, timber and mixed timber-concrete structures as well as on metals.
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Daniele Inaudi, Adil Elamari, Samuel Vurpillot, "Low-coherence interferometry for the monitoring of civil engineering structures", Proc. SPIE 2361, Second European Conference on Smart Structures and Materials, (13 September 1994); doi: 10.1117/12.184829; https://doi.org/10.1117/12.184829
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KEYWORDS
Optical fibers

Sensors

Interferometry

Civil engineering

Fiber optics sensors

Epoxies

Mirrors

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