Millimeter-resolution distributed strain sensing of concrete structures

Nur Aida Abdul Rahim; Nicholas Mirabile; Maurizio Chiani; Laurent Briançon

doi:10.1117/12.2550526

28 August 2019 Millimeter-resolution distributed strain sensing of concrete structures

Nur Aida Abdul Rahim, Nicholas Mirabile, Maurizio Chiani, Laurent Briançon

Proceedings Volume 11199, Seventh European Workshop on Optical Fibre Sensors; 111992L (2019) https://doi.org/10.1117/12.2550526
Event: Seventh European Workshop on Optical Fibre Sensors, 2019, Limassol, Cyprus

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.

Citation Download Citation

Nur Aida Abdul Rahim, Nicholas Mirabile, Maurizio Chiani, and Laurent Briançon "Millimeter-resolution distributed strain sensing of concrete structures", Proc. SPIE 11199, Seventh European Workshop on Optical Fibre Sensors, 111992L (28 August 2019); https://doi.org/10.1117/12.2550526

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