Author: Ignacio Torres Contreras

Diagnosis of friction on an unbalanced rotor by phase-shift empirical mode decomposition integration and recurrence plot

Ignacio Torres Contreras Juan Carlos Jauregui JOSE SALVADOR ECHEVERRIA VILLAGOMEZ Juan Benitez-Rangel (2021)

The friction and imbalance of components in rotating machines are some of the most recurrent failures that significantly increase vibration levels, thus affecting the reliability of the devices, the shelf life of its elements, and the quality of the product. There are many publications related to the different techniques for the diagnosis of friction and imbalance. In this paper, an alternative and new phase-shift empirical mode decomposition integration (PSEMDI) method is proposed to transform the acceleration into its velocity and displacement in order to construct the phase plane and recurrence plot (RP) and analyze the friction. The focus of PSEMDI and RP is to analyze nonlinear failures in mechanical systems. In machinery fault diagnosis, the main reason for using RP is to solve the integration of acceleration, and this can be achieved by phase-shifting the intrinsic mode function (IMF) with the empirical mode decomposition (EMD). Although the highest IMFs contain some frequencies, most of them have very few; thus, by applying the phase shift identity, the integration can be carried out maintaining the nonlinearities. The proposed method is compared with Simpson’s integration and detrending with the EMD method (here referred to as SDEMDI). The experimental RP results show that the proposed method gives significantly more information about the velocity and displacement spectra and it is more stable and proportional than the SDEMDI method. The results of the proposed integration method are compared with vibration measurements obtained with an interferometer.

También es autora Stephanie Camacho Martínez (UAQ)

Author contributions: Conceptualization, validation, formal analysis, investigation, and writing original draft preparation, I.T.-C.; methodology, supervision and validation J.C.J.-C.; visualization, technical and writing editing reviewers, S.E.-V. and J.P.B.-R.; software, S.C.-M. All authors have read and agreed to the published version of the manuscript.

Funding: This research received no external funding.

Institutional Review Board Statement: Not applicable.

Informed consent Statement: Not applicable.

Data Availability Statement: Not applicable.

Conflicts of Interest: The authors declare no conflict of interest.

Article

Rotor unbalance Friction Recurrence plot Predictive maintenance Nonlinear vibration EMD INGENIERÍA Y TECNOLOGÍA CIENCIAS TECNOLÓGICAS TECNOLOGÍA E INGENIERÍA MECÁNICAS DISEÑO DE MÁQUINAS DISEÑO DE MÁQUINAS