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dc.contributor.authorMena Alonso, Álvaro 
dc.contributor.authorLatorre Carmona, Pedro 
dc.contributor.authorGonzález Cabrera, Dorys Carmen 
dc.contributor.authorDiez Pastor, José Francisco 
dc.contributor.authorRodríguez Diez, Juan José 
dc.contributor.authorMínguez Algarra, Jesús 
dc.contributor.authorVicente Cabrera, Miguel Ángel 
dc.date.accessioned2024-06-12T12:42:48Z
dc.date.available2024-06-12T12:42:48Z
dc.date.issued2023-07-09
dc.identifier.issn1644-9665
dc.identifier.urihttp://hdl.handle.net/10259/9252
dc.description.abstractThis paper shows a new low-cost technology for the measurement of crack propagation in quasi-fragile materials based on a stereo pair of cameras and LED light spots. The two cameras record the displacement experienced by a series of LED white lights. For each frame, the X, Y and Z 3D coordinates of all the centroids of the LED points are obtained. From this information, it is possible to determine the variation of the distance between any two of them. In this case, 2 strips of 12 LED lights each were arranged in such a way that the points of both strips coincided in pairs in height. The algorithm made it possible to monitor the increase in distance that occurred between each pair of lights at the same height. The paper shows the mathematical basis of this technological solution. A test has been carried out by installing this system in a concrete cube 150 mm side and subjected to a wedge-splitting test. The results show that it is possible to monitor the crack propagation (position of the crack front) during the test and to know the crack width too. At present, the accuracy of this technique is only limited by the camera resolution and the computer processing capability.es
dc.description.sponsorshipOpen Access funding provided thanks to the CRUE-CSIC agreement with Springer Nature. The authors are grateful for financial support from the Ministerio de Economía y Competitividad, Spain, with grant no. PID2019-110928RB-C32, the Ministerio de Ciencia e Innovación, project PID2020-119894GB-I0, and the Junta de Castilla y León project BU055P20; co-financed through European Union FEDER funds.es
dc.format.mimetypeapplication/pdf
dc.language.isoenges
dc.publisherSpringer Naturees
dc.relation.ispartofArchives of Civil and Mechanical Engineering. 2023, V. 23, n. 3es
dc.rightsAtribución 4.0 Internacional*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subject3D stereo systemes
dc.subjectCrack propagationes
dc.subjectSteel fibre-reinforced concretees
dc.subjectLED lightses
dc.subject.otherIngeniería civiles
dc.subject.otherCivil engineeringes
dc.subject.otherTecnologíaes
dc.subject.otherTechnologyes
dc.subject.otherMateriales de construcciónes
dc.subject.otherBuilding materialses
dc.subject.otherIngeniería mecánicaes
dc.subject.otherMechanical engineeringes
dc.titleA cost-effective stereo camera-based system for measuring crack propagation in fibre-reinforced concretees
dc.typeinfo:eu-repo/semantics/articlees
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses
dc.relation.publisherversionhttps://doi.org/10.1007/s43452-023-00723-6es
dc.identifier.doi10.1007/s43452-023-00723-6
dc.identifier.essn1644-9665
dc.journal.titleArchives of Civil and Mechanical Engineeringes
dc.volume.number23es
dc.issue.number3es
dc.type.hasVersioninfo:eu-repo/semantics/publishedVersiones


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