Structural FRF acquisition via electric impedance measurement applied to damage location

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dc.contributor.authorLopes, V
dc.contributor.authorPereira, J. A.
dc.contributor.authorInman, D. J.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T13:29:22Z
dc.date.available2014-05-20T13:29:22Z
dc.date.issued2000-01-01
dc.description.abstractContinuing development of new materials makes systems lighter and stronger permitting more complex systems to provide more functionality and flexibility that demands a more effective evaluation of their structural health. Smart material technology has become an area of increasing interest in this field. The combination of smart materials and artificial neural networks can be used as an excellent tool for pattern recognition, turning their application adequate for monitoring and fault classification of equipment and structures. In order to identify the fault, the neural network must be trained using a set of solutions to its corresponding forward Variational problem. After the training process, the net can successfully solve the inverse variational problem in the context of monitoring and fault detection because of their pattern recognition and interpolation capabilities. The use of structural frequency response function is a fundamental portion of structural dynamic analysis, and it can be extracted from measured electric impedance through the electromechanical interaction of a piezoceramic and a structure. In this paper we use the FRF obtained by a mathematical model (FEM) in order to generate the training data for the neural networks, and the identification of damage can be done by measuring electric impedance, since suitable data normalization correlates FRF and electrical impedance.en
dc.description.affiliationUNESP, Dept Mech Engn, BR-15385000 Ilha Solteira, SP, Brazil
dc.description.affiliationUnespUNESP, Dept Mech Engn, BR-15385000 Ilha Solteira, SP, Brazil
dc.format.extent1549-1555
dc.identifierhttp://www.thieme-connect.com/ejournals/abstract/10.1055/s-2006-949911
dc.identifier.citationImac-xviii: A Conference on Structural Dynamics, Vols 1 and 2, Proceedings. Bethel: Soc Experimental Mechanics Inc., v. 4062, p. 1549-1555, 2000.
dc.identifier.issn0277-786X
dc.identifier.lattes0224087261544502
dc.identifier.urihttp://hdl.handle.net/11449/9894
dc.identifier.wosWOS:000086462600235
dc.language.isoeng
dc.publisherSoc Experimental Mechanics Inc
dc.relation.ispartofImac-xviii: A Conference on Structural Dynamics, Vols 1 and 2, Proceedings
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.titleStructural FRF acquisition via electric impedance measurement applied to damage locationen
dc.typeTrabalho apresentado em evento
dcterms.rightsHolderSoc Experimental Mechanics Inc
unesp.author.lattes0224087261544502
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Engenharia, Ilha Solteirapt

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