Crack detection and localization in RC beams through smart MWCNT/epoxy strip-like strain sensors
In recent years, self-sensing structural materials have drawn enormous attention of scientific community due to their potential to enable continuous monitoring of the integrity of structures. The new paradigm of smart condition-based maintenance advocates the use of next-generation structures comple...
| Authors: | ; ; ; |
|---|---|
| Format: | Article |
| Status: | Accepted version |
| Publication date: | 2018 |
| Country: | España |
| Institution: | Universidad de Sevilla (US) |
| Repository: | idUS. Depósito de Investigación de la Universidad de Sevilla |
| OAI Identifier: | oai:idus.us.es:11441/154950 |
| Online Access: | https://hdl.handle.net/11441/154950 https://doi.org/10.1088/1361-665X/aae668 |
| Access Level: | Open access |
| Keyword: | Carbon nanotube Micromechanics Piezoresistivity Damage detection Sensor network Structual Health Monitoring Damage localization Smart composite |
| _version_ | 1878742886928875520 |
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| author | García Macías, Enrique |
| author2 | Rodríguez de Tembleque Solano, Luis Sáez Pérez, Andrés Ubertini, Filippo |
| author2_role | author author author |
| author_browse | García Macías, Enrique Rodríguez de Tembleque Solano, Luis Sáez Pérez, Andrés Ubertini, Filippo |
| author_facet | García Macías, Enrique Rodríguez de Tembleque Solano, Luis Sáez Pérez, Andrés Ubertini, Filippo |
| author_role | author |
| collection | idUS. Depósito de Investigación de la Universidad de Sevilla |
| description | In recent years, self-sensing structural materials have drawn enormous attention of scientific community due to their potential to enable continuous monitoring of the integrity of structures. The new paradigm of smart condition-based maintenance advocates the use of next-generation structures completely or partly constituted by self-sensing materials, that is, the structure or part of it also behaves as a sensor. In this context, the remarkable mechanical and electrical properties of multi walled carbon nanotubes (MWCNTs) have fostered an increasing number of applications as fillers for composites with multifunctional properties. Among a wide spectrum of potential applications, the development of skin-type piezoresistive distributed strain sensors shows great promise. Such sensors can be deployed onto large-scale structures, enabling a continuous monitoring of the strain state in the global area of the structure. In this paper, a theoretical study on the potential application of smart MWCNT/epoxy strip-like strain sensors for damage detection/localization/quantification in reinforced concrete (RC) beams is presented. A micromechanics-based finite element model is proposed for the electromechanical analysis of MWCNT/epoxy strips. Furthermore, a damage detection algorithm through model updating approach is introduced. To do so, an Euler–Bernoulli model for beams equipped with a smart MWCNT/epoxy strip is developed. Finally, two numerical case studies are presented including: a 2D concrete beam with multiple prescribed crack-like damages, and a 3D RC beam under four-point flexural conditions with non-prescribed cracking. Results show that the proposed smart strips are capable of exploiting the damage-induced variations in the electrical output to locate and quantify damages for real-time distributed structural health monitoring of RC beam structures. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | ES_fe088f68de04a71e6b1fa34a314b826b |
| institution | Universidad de Sevilla (US) |
| instname_str | Universidad de Sevilla (US) |
| network_acronym_str | ES |
| network_name_str | España |
| oai_identifier_str | oai:idus.us.es:11441/154950 |
| publishDate | 2018 |
| publishDateSort | 2018 |
| publisher | IOP Publishing |
| publisherStr | IOP Publishing |
| reponame_str | idUS. Depósito de Investigación de la Universidad de Sevilla |
| spelling | Crack detection and localization in RC beams through smart MWCNT/epoxy strip-like strain sensors García Macías, Enrique Rodríguez de Tembleque Solano, Luis Sáez Pérez, Andrés Ubertini, Filippo Carbon nanotube Micromechanics Piezoresistivity Damage detection Sensor network Structual Health Monitoring Damage localization Smart composite In recent years, self-sensing structural materials have drawn enormous attention of scientific community due to their potential to enable continuous monitoring of the integrity of structures. The new paradigm of smart condition-based maintenance advocates the use of next-generation structures completely or partly constituted by self-sensing materials, that is, the structure or part of it also behaves as a sensor. In this context, the remarkable mechanical and electrical properties of multi walled carbon nanotubes (MWCNTs) have fostered an increasing number of applications as fillers for composites with multifunctional properties. Among a wide spectrum of potential applications, the development of skin-type piezoresistive distributed strain sensors shows great promise. Such sensors can be deployed onto large-scale structures, enabling a continuous monitoring of the strain state in the global area of the structure. In this paper, a theoretical study on the potential application of smart MWCNT/epoxy strip-like strain sensors for damage detection/localization/quantification in reinforced concrete (RC) beams is presented. A micromechanics-based finite element model is proposed for the electromechanical analysis of MWCNT/epoxy strips. Furthermore, a damage detection algorithm through model updating approach is introduced. To do so, an Euler–Bernoulli model for beams equipped with a smart MWCNT/epoxy strip is developed. Finally, two numerical case studies are presented including: a 2D concrete beam with multiple prescribed crack-like damages, and a 3D RC beam under four-point flexural conditions with non-prescribed cracking. Results show that the proposed smart strips are capable of exploiting the damage-induced variations in the electrical output to locate and quantify damages for real-time distributed structural health monitoring of RC beam structures. Ministerio de Economía y Competitividad DPI2014-53947-R Ministerio de Economía y Competitividad DPI2017-89162-R Junta de Andalucía P12-TEP-2546 IOP Publishing https://hdl.handle.net/11441/154950 https://doi.org/10.1088/1361-665X/aae668 |
| spellingShingle | Crack detection and localization in RC beams through smart MWCNT/epoxy strip-like strain sensors García Macías, Enrique Carbon nanotube Micromechanics Piezoresistivity Damage detection Sensor network Structual Health Monitoring Damage localization Smart composite |
| status_str | acceptedVersion |
| title | Crack detection and localization in RC beams through smart MWCNT/epoxy strip-like strain sensors |
| title_full | Crack detection and localization in RC beams through smart MWCNT/epoxy strip-like strain sensors |
| title_fullStr | Crack detection and localization in RC beams through smart MWCNT/epoxy strip-like strain sensors |
| title_full_unstemmed | Crack detection and localization in RC beams through smart MWCNT/epoxy strip-like strain sensors |
| title_short | Crack detection and localization in RC beams through smart MWCNT/epoxy strip-like strain sensors |
| title_sort | Crack detection and localization in RC beams through smart MWCNT/epoxy strip-like strain sensors |
| topic | Carbon nanotube Micromechanics Piezoresistivity Damage detection Sensor network Structual Health Monitoring Damage localization Smart composite |
| topic_facet | Carbon nanotube Micromechanics Piezoresistivity Damage detection Sensor network Structual Health Monitoring Damage localization Smart composite |
| url | https://hdl.handle.net/11441/154950 https://doi.org/10.1088/1361-665X/aae668 |