Performance of Rayleigh-based Distributed Optical Fiber Sensors bonded to reinforcing bars in bending
Distributed Optical Fiber Sensors (DOFSs), thanks to their multiple sensing points, are ideal tools for the detection of deformations and cracking in reinforced concrete (RC) structures, crucial as a means to ensure the safety of infrastructures. Yet, beyond a certain point of most DOFS-monitored ex...
| Authors: | ; ; |
|---|---|
| Format: | Article |
| Publication date: | 2018 |
| Country: | España |
| Institution: | Universitat Politècnica de Catalunya (UPC) |
| Repository: | UPCommons. Portal del coneixement obert de la UPC |
| Language: | English |
| OAI Identifier: | oai:upcommons.upc.edu:2117/122107 |
| Online Access: | https://hdl.handle.net/2117/122107 https://dx.doi.org/10.3390/s18093125 |
| Access Level: | Open access |
| Keyword: | Optical fiber detectors Structural health monitoring structural health monitoring damage identification distributed optical fiber sensors Rayleigh backscattering reinforced concrete members steel reinforcement bars strain-reading anomalies spectral shift quality Detectors de fibra òptica Construcció en formigó Control d'estructures (Enginyeria) Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigó |
| _version_ | 1878730510317912064 |
|---|---|
| author | Bado, Mattia Francesco|||0000-0003-3446-261X |
| author2 | Casas Rius, Joan Ramon|||0000-0003-4473-4308 Barrias, Antonio Jose de Sousa|||0000-0002-2298-7956 |
| author2_role | author author |
| author_browse | Bado, Mattia Francesco|||0000-0003-3446-261X Barrias, Antonio Jose de Sousa|||0000-0002-2298-7956 Casas Rius, Joan Ramon|||0000-0003-4473-4308 |
| author_facet | Bado, Mattia Francesco|||0000-0003-3446-261X Casas Rius, Joan Ramon|||0000-0003-4473-4308 Barrias, Antonio Jose de Sousa|||0000-0002-2298-7956 |
| author_role | author |
| collection | UPCommons. Portal del coneixement obert de la UPC |
| description | Distributed Optical Fiber Sensors (DOFSs), thanks to their multiple sensing points, are ideal tools for the detection of deformations and cracking in reinforced concrete (RC) structures, crucial as a means to ensure the safety of infrastructures. Yet, beyond a certain point of most DOFS-monitored experimental tests, researchers have come across unrealistic readings of strain which prevent the extraction of further reliable data. The present paper outlines the results obtained through an experimental test aimed at inducing such anomalies to isolate and identify the physical cause of their origin. The understanding of such a phenomenon would enable DOFS to become a truly performant strain sensing technique. The test consists of gradually bending seven steel reinforcement bars with a bonded DOFS under different conditions such as different load types, bonding adhesives, bar sections and more. The results show the bonding adhesives having an influence on the DOFS performance but not on the rise of anomalies while the reasons triggering the latter are narrowed down from six to two, reaching a strain threshold and a change in structure’s deformative behavior. Further planned research will allow identification of the cause behind the rise of strain-reading anomalies. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | ES_1dbb331e00c8b0c5fa166b708d82d7c8 |
| institution | Universitat Politècnica de Catalunya (UPC) |
| instname_str | Universitat Politècnica de Catalunya (UPC) |
| language | eng |
| network_acronym_str | ES |
| network_name_str | España |
| oai_identifier_str | oai:upcommons.upc.edu:2117/122107 |
| publishDate | 2018 |
| publishDateSort | 2018 |
| publisher | Multidisciplinary Digital Publishing Institute (MDPI) |
| publisherStr | Multidisciplinary Digital Publishing Institute (MDPI) |
| reponame_str | UPCommons. Portal del coneixement obert de la UPC |
| spelling | Performance of Rayleigh-based Distributed Optical Fiber Sensors bonded to reinforcing bars in bending Bado, Mattia Francesco|||0000-0003-3446-261X Casas Rius, Joan Ramon|||0000-0003-4473-4308 Barrias, Antonio Jose de Sousa|||0000-0002-2298-7956 Optical fiber detectors Structural health monitoring structural health monitoring damage identification distributed optical fiber sensors Rayleigh backscattering reinforced concrete members steel reinforcement bars strain-reading anomalies spectral shift quality Detectors de fibra òptica Construcció en formigó Control d'estructures (Enginyeria) Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigó Distributed Optical Fiber Sensors (DOFSs), thanks to their multiple sensing points, are ideal tools for the detection of deformations and cracking in reinforced concrete (RC) structures, crucial as a means to ensure the safety of infrastructures. Yet, beyond a certain point of most DOFS-monitored experimental tests, researchers have come across unrealistic readings of strain which prevent the extraction of further reliable data. The present paper outlines the results obtained through an experimental test aimed at inducing such anomalies to isolate and identify the physical cause of their origin. The understanding of such a phenomenon would enable DOFS to become a truly performant strain sensing technique. The test consists of gradually bending seven steel reinforcement bars with a bonded DOFS under different conditions such as different load types, bonding adhesives, bar sections and more. The results show the bonding adhesives having an influence on the DOFS performance but not on the rise of anomalies while the reasons triggering the latter are narrowed down from six to two, reaching a strain threshold and a change in structure’s deformative behavior. Further planned research will allow identification of the cause behind the rise of strain-reading anomalies. Peer Reviewed Multidisciplinary Digital Publishing Institute (MDPI) https://hdl.handle.net/2117/122107 https://dx.doi.org/10.3390/s18093125 |
| spellingShingle | Performance of Rayleigh-based Distributed Optical Fiber Sensors bonded to reinforcing bars in bending Bado, Mattia Francesco|||0000-0003-3446-261X Optical fiber detectors Structural health monitoring structural health monitoring damage identification distributed optical fiber sensors Rayleigh backscattering reinforced concrete members steel reinforcement bars strain-reading anomalies spectral shift quality Detectors de fibra òptica Construcció en formigó Control d'estructures (Enginyeria) Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigó |
| title | Performance of Rayleigh-based Distributed Optical Fiber Sensors bonded to reinforcing bars in bending |
| title_full | Performance of Rayleigh-based Distributed Optical Fiber Sensors bonded to reinforcing bars in bending |
| title_fullStr | Performance of Rayleigh-based Distributed Optical Fiber Sensors bonded to reinforcing bars in bending |
| title_full_unstemmed | Performance of Rayleigh-based Distributed Optical Fiber Sensors bonded to reinforcing bars in bending |
| title_short | Performance of Rayleigh-based Distributed Optical Fiber Sensors bonded to reinforcing bars in bending |
| title_sort | Performance of Rayleigh-based Distributed Optical Fiber Sensors bonded to reinforcing bars in bending |
| topic | Optical fiber detectors Structural health monitoring structural health monitoring damage identification distributed optical fiber sensors Rayleigh backscattering reinforced concrete members steel reinforcement bars strain-reading anomalies spectral shift quality Detectors de fibra òptica Construcció en formigó Control d'estructures (Enginyeria) Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigó |
| topic_facet | Optical fiber detectors Structural health monitoring structural health monitoring damage identification distributed optical fiber sensors Rayleigh backscattering reinforced concrete members steel reinforcement bars strain-reading anomalies spectral shift quality Detectors de fibra òptica Construcció en formigó Control d'estructures (Enginyeria) Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigó |
| url | https://hdl.handle.net/2117/122107 https://dx.doi.org/10.3390/s18093125 |