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dc.contributor.authorQuiroga Méndez, Jabid
dc.contributor.authorMujica Delgado, Luis Eduardo
dc.contributor.authorVillamizar Mejía, Rodolfo
dc.contributor.authorRuiz Ordóñez, Magda
dc.contributor.authorCamacho Navarro, Jhonatan
dc.contributor.otherEscola Tècnica Superior d'Enginyers de Camins, Canals i Ports de Barcelona
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Matemàtiques
dc.identifier.citationQuiroga, J., Mujica, L.E., Villamizar, R., Ruiz, M., Camacho-Navarro, J. PCA based stress monitoring of cylindrical specimens using PZTs and guidedwaves. "Sensors", Desembre 2017, vol. 17, núm. 12, p. 1-16.
dc.description.abstractSince mechanical stress in structures affects issues such as strength, expected operational life and dimensional stability, a continuous stress monitoring scheme is necessary for a complete integrity assessment. Consequently, this paper proposes a stress monitoring scheme for cylindrical specimens, which are widely used in structures such as pipelines, wind turbines or bridges. The approach consists of tracking guided wave variations due to load changes, by comparing wave statistical patterns via Principal Component Analysis (PCA). Each load scenario is projected to the PCA space by means of a baseline model and represented using the Q-statistical indices. Experimental validation of the proposed methodology is conducted on two specimens: (i) a 12.7 mm (1/2”) diameter, 0.4 m length, AISI 1020 steel rod, and (ii) a 25.4 mm (1”) diameter, 6m length, schedule 40, A-106, hollow cylinder. Specimen 1 was subjected to axial loads, meanwhile specimen 2 to flexion. In both cases, simultaneous longitudinal and flexural guided waves were generated via piezoelectric devices (PZTs) in a pitch-catch configuration. Experimental results show the feasibility of the approach and its potential use as in-situ continuous stress monitoring application.
dc.format.extent16 p.
dc.publisherMultidisciplinary Digital Publishing Institute (MDPI)
dc.rightsAttribution 3.0 Spain
dc.subjectÀrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures metàl·liques
dc.subject.lcshTubes, Steel--Testing
dc.subject.otherCylindrical waveguide
dc.subject.otherGuided waves
dc.subject.otherStatistical analysis
dc.subject.otherStress monitoring
dc.titlePCA based stress monitoring of cylindrical specimens using PZTs and guidedwaves
dc.subject.lemacTubs d'acer
dc.contributor.groupUniversitat Politècnica de Catalunya. CoDAlab - Control, Modelització, Identificació i Aplicacions
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
dc.description.versionPostprint (published version)
upcommons.citation.authorQuiroga, J.; Mujica, L.E.; Villamizar, R.; Ruiz, M.; Camacho-Navarro, J.

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