A fault location method using Lamb waves and discrete wavelet transform

dc.creatorSouza, Pablo Rodrigo de
dc.creatorNobrega, Eurípedes Guilherme de Oliveira
dc.date2012-12-01
dc.date2014-07-18T18:02:54Z
dc.date2015-11-26T11:56:26Z
dc.date2014-07-18T18:02:54Z
dc.date2015-11-26T11:56:26Z
dc.date.accessioned2018-03-28T20:59:23Z
dc.date.available2018-03-28T20:59:23Z
dc.identifierJournal of the Brazilian Society of Mechanical Sciences and Engineering. Associação Brasileira de Engenharia e Ciências Mecânicas - ABCM, v. 34, n. 4, p. 515-524, 2012.
dc.identifier1678-5878
dc.identifierS1678-58782012000400013
dc.identifier10.1590/S1678-58782012000400013
dc.identifierhttp://dx.doi.org/10.1590/S1678-58782012000400013
dc.identifierhttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-58782012000400013
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/35329
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/35329
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1238512
dc.descriptionNon-destructive evaluation methods and signal process techniques are important steps in structural health monitoring systems to assess the structure integrity. This paper presents a method for fault location in aluminum beams based on time of flight of Lamb waves. The dynamic response signal captured from the structure was processed using the discrete wavelet transform. The information accuracy obtained from the processed signal depends on the correct choice of the mother wavelet. The best mother wavelet was selected using the Shannon's entropy criterion. Numerical results for a damage localized in different positions are presented using the spectral finite element method, and an experimental setup was used to assess the accuracy of the method. The results showed that the combination of the non-destructive evaluation technique based on Lamb waves with the discrete wavelet transform is effective in detecting and locating faults in aluminum beams whose results had errors less than 1%.
dc.description515
dc.description524
dc.languageen
dc.publisherAssociação Brasileira de Engenharia e Ciências Mecânicas - ABCM
dc.relationJournal of the Brazilian Society of Mechanical Sciences and Engineering
dc.rightsaberto
dc.sourceSciELO
dc.subjectstructural health monitoring
dc.subjectfault detection and localization
dc.subjectLamb waves
dc.subjectdiscrete wavelet transform
dc.subjectspectral finite element method
dc.titleA fault location method using Lamb waves and discrete wavelet transform
dc.typeArtículos de revistas


Este ítem pertenece a la siguiente institución