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Determination of the critical speed of a cracked shaft from experimental data

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dc.affiliation.areaUC3M. Área de Ingeniería Mecánicaes
dc.affiliation.dptoUC3M. Departamento de Ingeniería Mecánicaes
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Simulación y Optimización Mecánica (SiOMec)es
dc.contributor.authorMuñoz Abella, María Belén
dc.contributor.authorMontero García, Laura
dc.contributor.authorRubio Herrero, Patricia
dc.contributor.authorRubio Ruiz de Aguirre, María Lourdes
dc.contributor.funderMinisterio de Ciencia e Innovación (España)es
dc.date.accessioned2023-04-24T11:26:35Z
dc.date.available2023-04-24T11:26:35Z
dc.date.issued2022-12-02
dc.descriptionThis article belongs to the Section Fault Diagnosis & Sensors.en
dc.description.abstractIn this work, a procedure to obtain an accurate value of the critical speed of a cracked shaft is presented. The method is based on the transversal displacements of the cracked section when the shaft is rotating at submultiples of the critical speed. The SERR (Strain Energy Ralease Rate) theory and the CCL (Crack Closure Line) approach are used to analyse the proposed methodology for considering the behaviour of the crack. In order to obtain the best information and to define the procedure, the orbits and the frequency spectra at different subcritical rotational speed intervals are analyzed by means of the Fast Fourier Transform. The comparison of the maximum values of the FFT peaks within the intervals allows the subcritical speed to be determined, along with the value of the critical speed. When verified, the proposed procedure is applied to shafts with the same geometry and material and with cracks of increasing depth. The results show that the critical speed diminishes with the severity of the crack, as expected. A comparison is made between the critical speed obtained using the vertical and the horizontal displacements, finding no remarkable differences, meaning that in practical applications only one sensor for one of the displacements (in the vertical or horizontal direction) is needed to determine the critical speed. This is one of the main contributions of the paper, as it means that the orbits of the shaft are not needed. Finally, after this study we can conclude that the best results are achieved when the critical speed is obtained using data displacement in only one direction within the intervals around 1/2 or 1/3 of the critical speed.en
dc.description.sponsorshipThis research was funded by the Ministerio de Ciencia e Innovación under the projects DPI2006-09906 and DPI2009-13264.en
dc.format.extent22
dc.identifier.bibliographicCitationMuñoz-Abella, B., Montero, L., Rubio, P., & Rubio, L. (2022). Determination of the Critical Speed of a Cracked Shaft from Experimental Data. Sensors, 22(24), 9777.en
dc.identifier.doihttps://doi.org/10.3390/s22249777
dc.identifier.issn1424-3210
dc.identifier.publicationfirstpage1
dc.identifier.publicationissue24, 9777
dc.identifier.publicationlastpage22
dc.identifier.publicationtitleSensorsen
dc.identifier.publicationvolume22
dc.identifier.urihttps://hdl.handle.net/10016/37184
dc.identifier.uxxiAR/0000032303
dc.language.isoeng
dc.publisherMDPI
dc.relation.projectIDGobierno de España. DPI2006-09906es
dc.relation.projectIDGobierno de España. DPI2009-13264es
dc.rights© 2022 by the authors.en
dc.rightsAtribución 3.0 España*
dc.rights.accessRightsopen accessen
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/es/*
dc.subject.ecienciaFísicaes
dc.subject.ecienciaIngeniería Mecánicaes
dc.subject.otherCracked shaftsen
dc.subject.otherCritical speeden
dc.subject.otherFrequency spectrumen
dc.subject.otherRotating shaftsen
dc.titleDetermination of the critical speed of a cracked shaft from experimental dataen
dc.typeresearch article*
dc.type.hasVersionVoR*
dspace.entity.typePublication
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