Quantitative Strain Measurement with Distributed Fiber Optic Systems: Qualification of a Sensing Cable Bonded to the Surface of a Concrete Structure
| Autor: | Billon, A., Henault, J. -M, Quiertant, M., Frédéric Taillade, Khadour, A., Martin, R. -P, Benzarti, K. |
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| Přispěvatelé: | EDF (EDF), Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR), IFFSTTAR, Inria, Université de Nantes, Le Cam, Vincent and Mevel, Laurent and Schoefs, Franck, Simulation et Traitement de l'information pour l'Exploitation des systèmes de Production (EDF R&D STEP), EDF R&D (EDF R&D), EDF (EDF)-EDF (EDF), Expérimentation et Modélisation des Matériaux et des Structures (IFSTTAR/MAST/EMMS), Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)-Communauté Université Paris-Est, Laboratoire Instrumentation, Simulation et Informatique Scientifique (IFSTTAR/COSYS/LISIS), Communauté Université Paris-Est-Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR), Comportement Physico-chimique et Durabilité des Matériaux (IFSTTAR/MAST/CPDM), Cadic, Ifsttar |
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Civil engineering SHM applications
STRUCTURE [PHYS.MECA.STRU] Physics [physics]/Mechanics [physics]/Structural mechanics [physics.class-ph] Damage detection and localization Physics::Optics [PHYS.MECA]Physics [physics]/Mechanics [physics] [STAT.TH]Statistics [stat]/Statistics Theory [stat.TH] [SPI.MAT] Engineering Sciences [physics]/Materials Optic fiber [SPI.MECA]Engineering Sciences [physics]/Mechanics [physics.med-ph] FISSURE DETECTION [SPI.MAT]Engineering Sciences [physics]/Materials [PHYS.MECA.STRU]Physics [physics]/Mechanics [physics]/Structural mechanics [physics.class-ph] DEFORMATION [SPI.MECA.STRU]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Structural mechanics [physics.class-ph] [MATH.MATH-ST]Mathematics [math]/Statistics [math.ST] SURVEILLANCE [SPI.MECA.STRU] Engineering Sciences [physics]/Mechanics [physics.med-ph]/Structural mechanics [physics.class-ph] CAPTEUR |
| Zdroj: | EWSHM-7th European Workshop on Structural Health Monitoring EWSHM-7th European Workshop on Structural Health Monitoring, IFFSTTAR, Inria, Université de Nantes, Jul 2014, Nantes, France 7th European workshop on structural health monitoring 7th European workshop on structural health monitoring, Jul 2014, France. 8p Scopus-Elsevier |
| Popis: | International audience; Distributed Fiber Optic Systems (DOFS) are an emerging and innovative technology that allows long-range and continuous strain/temperature monitoring with a high resolution. However, strain profiles measured in the optical fiber may differ from actual strain in the structure, due to the shear transfer through the intermediate material layers between the optical fiber and the host material (i.e., in the protective coating of the sensing cable and in the adhesive). Therefore, fiber optic sensors need to be qualified in order to provide accurate quantitative strain measurements. This study presents a methodology for the qualification of a DOFS. It is proposed to establish a numerical modeling of the system, in which the mechanical parameters are calibrated from experiments. A specific surface-mounted sensing cable connected to an Optical Frequency Reflectometry Domain (OFDR) interrogator is considered as case study. We found that (i) tensile and pull-out tests are able to provide full information about materials and interfaces of our modeling, (ii) the calibrated model allows us to compute strain profiles along the optical fiber, (iii) which proved to be consistent with strain profiles measured on a cracked concrete beam during a 4-points bending test. |
| Databáze: | OpenAIRE |
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