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dc.contributor.authorTibaduiza Burgos, Diego Alexander
dc.contributor.authorMujica Delgado, Luis Eduardo
dc.contributor.authorRodellar Benedé, José
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Matemàtica Aplicada III
dc.date.accessioned2011-10-05T10:39:04Z
dc.date.available2011-10-05T10:39:04Z
dc.date.created2011-07-19
dc.date.issued2011-07-19
dc.identifier.citationTibaduiza, D.; Mujica, L.; Rodellar, J. Comparison of several methods for damage localization using indices and contributions based on PCA. "Journal of physics: conference series (online)", 19 Juliol 2011, vol. 305, núm. 012013, p. 1-10.
dc.identifier.issn1742-6596
dc.identifier.urihttp://hdl.handle.net/2117/13424
dc.description.abstractIn previous works by the authors, it was shown the advantages of applying an active piezoelectric system in combination with Principal Component Analysis and Neural Networks as methodology for damage detection in structures. An active piezoelectric system considers the advantage of using piezoelectric transducers (PZT's) as actuator as well as sensor. In each phase of the diagnosis procedure, one PZT is used as actuator (a known electrical signal is applied) and the others are used as sensors (collecting the wave propagated through the structure at di erent points). An initial baseline model for undamaged structure is built applying Principal Component Analysis (PCA) to the data collected by several experiments. Current structure (damaged or not) is subjected to the same experiments, and the collected data are projected in the PCA model. In this paper, two indices are used to detect damages; these indices are calculated from the information obtained from the projection of the experiments in the PCA model (baseline). Besides the localization is performed using ve di erent methods. These methods are based on the contribution of each sensor to each index, in this way, according to these contributions, the damage can be localized. The combination of all indices and all contributions (a total of 2 x 5) are analyzed and compared. To validate the approach, the methods are applied to an aluminum plate which is instrumented with several PZT's.
dc.format.extent10 p.
dc.language.isoeng
dc.subjectÀrees temàtiques de la UPC::Matemàtiques i estadística::Matemàtica aplicada a les ciències
dc.subject.lcshPrincipal component analysis
dc.subject.lcshStructures -- Damages -- Localization
dc.subject.lcshStructures -- Damages -- Detection
dc.subject.lcshPCA
dc.subject.lcshStructural health onitoring
dc.titleComparison of several methods for damage localization using indices and contributions based on PCA
dc.typeArticle
dc.subject.lemacAnàlisi de components principals
dc.subject.lemacEstructures
dc.contributor.groupUniversitat Politècnica de Catalunya. CoDAlab - Control, Modelització, Identificació i Aplicacions
dc.identifier.doi10.1088/1742-6596/305/1/012013
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttp://iopscience.iop.org/1742-6596/305/1/012013
dc.rights.accessRestricted access - publisher's policy
drac.iddocument6001008
dc.description.versionPostprint (published version)
upcommons.citation.authorTibaduiza, D.; Mujica, L.; Rodellar, J.
upcommons.citation.publishedtrue
upcommons.citation.publicationNameJournal of physics: conference series (online)
upcommons.citation.volume305
upcommons.citation.number012013
upcommons.citation.startingPage1
upcommons.citation.endingPage10


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