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Proceedings Paper

Millimeter-resolution distributed strain sensing of concrete structures
Author(s): Nur Aida Abdul Rahim; Nicholas Mirabile; Maurizio Chiani; Laurent Briançon
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Paper Abstract

This paper presents the embedding of calibrated fiber optic cables into a simplified concrete structure to obtain spatially dense internal strain measurements under a 3-point bending load. Taking advantage of the millimeter-level spatial resolution of the measurement system, it is possible to identify the onset of cracking within the concrete and compare the behavior of both unreinforced and steel rebar-reinforced structures. Integrating these sensors during new construction, or retrofitting into existing structures, will enable the rapid and cost-efficient inspection and lifetime monitoring, identifying impending failure before a catastrophic event occurs. This is exemplified by two applications in France: instrumenting a tower’s foundation and measuring settlement of a pillar built using a new design.

Paper Details

Date Published: 28 August 2019
PDF: 4 pages
Proc. SPIE 11199, Seventh European Workshop on Optical Fibre Sensors, 111992L (28 August 2019); doi: 10.1117/12.2550526
Show Author Affiliations
Nur Aida Abdul Rahim, Luna Innovations Inc. (United States)
Nicholas Mirabile, Luna Innovations Inc. (United States)
Maurizio Chiani, Dimione Systems (France)
Laurent Briançon, Univ. de Lyon (France)


Published in SPIE Proceedings Vol. 11199:
Seventh European Workshop on Optical Fibre Sensors
Kyriacos Kalli; Sinead O. O'Keeffe; Gilberto Brambilla, Editor(s)

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