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Proceedings Paper

Low-coherence interferometry for the monitoring of civil engineering structures
Author(s): Daniele Inaudi; Adil Elamari; Samuel Vurpillot
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Paper 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.

Paper Details

Date Published: 13 September 1994
PDF: 4 pages
Proc. SPIE 2361, Second European Conference on Smart Structures and Materials, (13 September 1994); doi: 10.1117/12.184829
Show Author Affiliations
Daniele Inaudi, Swiss Federal Institute of Technology (Switzerland)
Adil Elamari, Geneva Univ. (Switzerland)
Samuel Vurpillot, Swiss Federal Institute of Technology (Switzerland)


Published in SPIE Proceedings Vol. 2361:
Second European Conference on Smart Structures and Materials
Alaster McDonach; Peter T. Gardiner; Ron S. McEwen; Brian Culshaw, Editor(s)

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