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Carbon Fiber Epoxy Composites for Both Strengthening and Health Monitoring of Structures

2015-03Journal article Open access
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dc.contributor.authorSalvado, Rita
dc.contributor.authorLopes, Catarina
dc.contributor.authorSzojda, Leszek
dc.contributor.authorAraújo, Pedro
dc.contributor.authorGórski, Marcin
dc.contributor.authorVelez, Fernando
dc.contributor.authorCastro-Gomes, João
dc.contributor.authorKrzywon, Rafal
dc.date.accessioned2024-03-25T14:34:17Z
dc.date.available2024-03-25T14:34:17Z
dc.date.issued2015-03
dc.description.abstractThis paper presents a study of the electrical and mechanical behavior of several continuous carbon fibers epoxy composites for both strengthening and monitoring of structures. In these composites, the arrangement of fibers was deliberately diversified to test and understand the ability of the composites for self-sensing low strains. Composites with different arrangements of fibers and textile weaves, mainly unidirectional continuous carbon reinforced composites, were tested at the dynamometer. A two-probe method was considered to measure the relative electrical resistance of these composites during loading. The measured relative electrical resistance includes volume and contact electrical resistances. For all tested specimens, it increases with an increase in tensile strain, at low strain values. This is explained by the improved alignment of fibers and resulting reduction of the number of possible contacts between fibers during loading, increasing as a consequence the contact electrical resistance of the composite. Laboratory tests on strengthening of structural elements were also performed, making hand-made composites by the “wet process”, which is commonly used in civil engineering for the strengthening of all types of structures in-situ. Results show that the woven epoxy composite, used for strengthening of concrete elements is also able to sense low deformations, below 1%. Moreover, results clearly show that this textile sensor also improves the mechanical work of the strengthened structural elements, increasing their bearing capacity. Finally, the set of obtained results supports the concept of a textile fabric capable of both structural upgrade and self-monitoring of structures, especially large structures of difficult access and needing constant, sometimes very expensive, health monitoring.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationRita Salvado, Catarina Lopes, Leszek Szojda, Pedro Araújo, Marcin Gorski, Fernando José Velez, João Castro-Gomes and Rafal Krzywon, “Carbon Fiber Epoxy Composites for both Strengthening and Health Monitoring of Structures,” Sensors, vol. 15, no. 5, Mar. 2015, pp. 10753-10770.pt_PT
dc.identifier.doi10.3390/s150510753pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.6/14313
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.relationIntelligent Systems for Structures Strengthening and Monitoring
dc.relation.publisherversionhttps://www.mdpi.com/1424-8220/15/5/10753pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nd/4.0/pt_PT
dc.subjectStructural health monitoringpt_PT
dc.subjectCarbon fibers polymer-matrix compositespt_PT
dc.subjectSelf-sensingpt_PT
dc.subjectStrain sensorspt_PT
dc.subjectElectrical resistancept_PT
dc.titleCarbon Fiber Epoxy Composites for Both Strengthening and Health Monitoring of Structurespt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleIntelligent Systems for Structures Strengthening and Monitoring
oaire.awardURIinfo:eu-repo/grantAgreement/EC/FP7/251373/EU
oaire.citation.endPage10770pt_PT
oaire.citation.issue5pt_PT
oaire.citation.startPage10753pt_PT
oaire.citation.titleSensorspt_PT
oaire.citation.volume15pt_PT
oaire.fundingStreamFP7
person.familyNameSalvado
person.familyNameSzojda
person.familyNameARAÚJO
person.familyNameGórski
person.familyNameVelez
person.familyNamePaulo CastroGomes
person.familyNameKrzywon
person.givenNameRita
person.givenNameLeszek
person.givenNamePEDRO
person.givenNameMarcin
person.givenNameFernando J.
person.givenNameJoão
person.givenNameRafal
person.identifier0000000113560443
person.identifierrgS1HvUAAAAJ
person.identifier.ciencia-idD210-B2D8-193A
person.identifier.ciencia-id1510-E247-C9DB
person.identifier.ciencia-id9517-8605-DCC4
person.identifier.orcid0000-0001-6691-5025
person.identifier.orcid0000-0002-9919-6263
person.identifier.orcid0000-0003-2102-8179
person.identifier.orcid0000-0001-7028-924X
person.identifier.orcid0000-0001-9680-123X
person.identifier.orcid0000-0002-2694-5462
person.identifier.orcid0000-0002-9137-6075
person.identifier.ridE-4061-2013
person.identifier.ridA-8295-2018
person.identifier.scopus-author-id14020373400
person.identifier.scopus-author-id15726778300
person.identifier.scopus-author-id27067541800
person.identifier.scopus-author-id15725200700
person.identifier.scopus-author-id14017800700
person.identifier.scopus-author-id55027464500
project.funder.identifierhttp://doi.org/10.13039/501100008530
project.funder.nameEuropean Commission
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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