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BALL BEARING VIBRATION MONITORING FOR FAULT DETECTION BY THE ENVELOPE TECHNIQUE

Alegranzi, S. B.; Gonçalves, J. F.; Gomes, H. M.;

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This paper presents an application of Hilbert Transform in a method based on vibration analysis by demodulation for identification of bearing failures. This technique is known as Envelope Technique. Initially, a test rig is adjusted and modified in order to acquire the vibration signals from a test bearing under load and rotational speed conditions. Then, experimental tests are performed on ball bearings with induced damage on outer/inner races, which are a very common situation for incipient bearing failure. Several cases are studied, varying the severity/location of the defect and service load condition. Then, it is implemented a software to perform the extraction of the spectrum envelope, that contains the bearing failure signature, using Hilbert transform from the original acceleration waveform. Spectrum envelopes of healthy and defective bearings are compared with the characteristic bearing defect frequencies. The results presented the effectiveness of the method for the studied cases.

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Palavras-chave: Ball bearing fault detection, Hilbert transform, Envelope spectrum,

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DOI: 10.5151/meceng-wccm2012-19745

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Como citar:

Alegranzi, S. B.; Gonçalves, J. F.; Gomes, H. M.; "BALL BEARING VIBRATION MONITORING FOR FAULT DETECTION BY THE ENVELOPE TECHNIQUE", p. 4113-4125 . In: In Proceedings of the 10th World Congress on Computational Mechanics [= Blucher Mechanical Engineering Proceedings, v. 1, n. 1]. São Paulo: Blucher, 2014.
ISSN 2358-0828, DOI 10.5151/meceng-wccm2012-19745

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