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Embedded distributed optical fiber sensors in reinforced concrete structures: a case study
dc.contributor.author | Barrias, Antonio Jose de Sousa |
dc.contributor.author | Casas Rius, Joan Ramon |
dc.contributor.author | Villalba Herrero, Sergi |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció |
dc.date.accessioned | 2018-04-04T15:55:29Z |
dc.date.available | 2018-04-04T15:55:29Z |
dc.date.issued | 2018-04 |
dc.identifier.citation | De Sousa, A., Casas, J., Villalba, S. Embedded distributed optical fiber sensors in reinforced concrete structures: a case study. "Sensors", Abril 2018, vol. 18, núm. 4, p. 1-22. |
dc.identifier.issn | 1424-8220 |
dc.identifier.uri | http://hdl.handle.net/2117/115965 |
dc.description.abstract | When using distributed optical fiber sensors (DOFS) on reinforced concrete structures, a compromise must be achieved between the protection requirements and robustness of the sensor deployment and the accuracy of the measurements both in the uncracked and cracked stages and under loading, unloading and reloading processes. With this in mind the authors have carried out an experiment where polyimide-coated DOFS were installed on two concrete beams, both embedded in the rebar elements and also bonded to the concrete surface. The specimens were subjected to a three-point load test where after cracking, they are unloaded and reloaded again to assess the capability of the sensor when applied to a real loading scenarios in concrete structures. Rayleigh Optical Frequency Domain Reflectometry (OFDR) was used as the most suitable technique for crack detection in reinforced concrete elements. To verify the reliability and accuracy of the DOFS measurements, additional strain gauges were also installed at three locations along the rebar. The results show the feasibility of using a thin coated polyimide DOFS directly bonded on the reinforcing bar without the need of indention or mechanization. A proposal for a Spectral Shift Quality (SSQ) threshold is also obtained and proposed for future works when using polyimide-coated DOFS bonded to rebars with cyanoacrylate adhesive. |
dc.format.extent | 22 p. |
dc.language.iso | eng |
dc.publisher | Multidisciplinary Digital Publishing Institute (MDPI) |
dc.rights | Attribution 3.0 Spain |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/es/ |
dc.subject | Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigó |
dc.subject.lcsh | Structural health monitoring |
dc.subject.other | fiber optics |
dc.subject.other | structural health monitoring |
dc.subject.other | distributed fiber sensing |
dc.subject.other | civil engineering |
dc.subject.other | load testing |
dc.subject.other | reinforced concrete |
dc.subject.other | cracking |
dc.title | Embedded distributed optical fiber sensors in reinforced concrete structures: a case study |
dc.type | Article |
dc.subject.lemac | Construcció en formigó |
dc.subject.lemac | Detectors de fibra òptica |
dc.contributor.group | Universitat Politècnica de Catalunya. EC - Enginyeria de la Construcció |
dc.contributor.group | Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció |
dc.identifier.doi | 10.3390/s18040980 |
dc.description.peerreviewed | Peer Reviewed |
dc.relation.publisherversion | http://www.mdpi.com/1424-8220/18/4/980 |
dc.rights.access | Open Access |
local.identifier.drac | 22031794 |
dc.description.version | Postprint (published version) |
dc.relation.projectid | info:eu-repo/grantAgreement/EC/H2020/642453/EU/Training in Reducing Uncertainty in Structural Safety/TRUSS |
local.citation.author | De Sousa, A.; Casas, J.; Villalba, S. |
local.citation.publicationName | Sensors |
local.citation.volume | 18 |
local.citation.number | 4 |
local.citation.startingPage | 1 |
local.citation.endingPage | 22 |
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