Crack detection in rotating shafts based on 3x energy: analytical and experimental analyses

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Show simple item record Gómez García, María Jesús Castejón Sisamón, Cristina García Prada, Juan Carlos 2021-07-02T12:01:59Z 2021-07-02T12:01:59Z 2016-02-01
dc.identifier.issn 0094-114X
dc.description.abstract Maintenance is essential to prevent catastrophic failures in rotating machinery. A crack can cause a failure with costly processes of reparation, especially in a rotating shaft. In this study, the wavelet transform theory was applied to vibration signals to detect cracks in a rotating shaft. Data were obtained from an analytical Jeffcott rotor model with a breathing function to simulate cracks. Large changes in energy when a crack appears were discovered at 1 ×, 2 × and 3 ×. Thereafter, vibration signals were obtained from a rotating machine at different steady-state rotational speeds using an accelerometer mounted on the bearing housing. Nine defect conditions were induced in the shaft (with depths from 4% to 50% of the shaft diameter). By matching the theoretical results with the experimental data, it was found that only the 3 × component of the rotational speed is a clear indicator of the presence of a crack in this case. The energy level at this harmonic can be used for the inverse process of crack detection. Moreover, “probability of detection” curves were calculated. They showed very good results.
dc.description.sponsorship The authors would like to thank the Spanish Government for financing through the CDTI project RANKINE21 IDI-20101560.
dc.format.extent 12
dc.language.iso eng
dc.publisher Elsevier
dc.rights © 2015 Elsevier Ltd. All rights reserved.
dc.rights Atribución-NoComercial-SinDerivadas 3.0 España
dc.subject.other Cracked shaft detection
dc.subject.other Wavelet transform
dc.subject.other Condition monitoring
dc.subject.other Probability of detection
dc.title Crack detection in rotating shafts based on 3x energy: analytical and experimental analyses
dc.type article
dc.description.status Publicado
dc.subject.eciencia Ingeniería Mecánica
dc.rights.accessRights openAccess
dc.relation.projectID Gobierno de España. RANKINE21 IDI-20101560
dc.type.version acceptedVersion
dc.identifier.publicationfirstpage 94
dc.identifier.publicationlastpage 106
dc.identifier.publicationtitle MECHANISM AND MACHINE THEORY
dc.identifier.publicationvolume 96, part 1
dc.identifier.uxxi AR/0000017561
dc.contributor.funder Ministerio de Ciencia e Innovación (España)
dc.affiliation.dpto UC3M. Departamento de Ingeniería Mecánica
dc.affiliation.grupoinv UC3M. Grupo de Investigación: MAQLAB: Laboratorio de Máquinas
dc.affiliation.area UC3M. Área de Ingeniería Mecánica
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