Demodulation of Vibration Signal Based on Envelope-Kurtogram for Ball Bearing Fault Detection

Main Article Content

Berli Paripurna Kamiel

Abstract

Rolling element bearings often suffer damage due to harsh operating and environmental conditions. The method commonly used in detecting faults in a bearing is envelope analysis. However, this method requires setting the central frequency and the correct bandwidth - which corresponds to the resonance frequency of the bearing - for signal demodulation to be effective. This study proposes a kurtogram to determine the correct central frequency and bandwidth to obtain the frequency band with the highest impulse content or the highest kurtosis value. Analysis envelope is applied to the filtered vibration signal using the central frequency and bandwidth parameters obtained from the kurtogram. The results showed that the envelope-kurtogram method is effective for faulty bearing detection as shown in the envelope spectrum where the peaks coincide with the bearing defect characteristic frequency (BPFO) with high accuracy. Likewise, it can be observed several BPFO harmonics which provide information on the level of bearing fault.

Article Details

How to Cite
Kamiel, B. P. (2020). Demodulation of Vibration Signal Based on Envelope-Kurtogram for Ball Bearing Fault Detection. JMPM (Jurnal Material Dan Proses Manufaktur), 4(2), 115–123. https://doi.org/10.18196/jmpm.v4i2.11271
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Articles
Author Biography

Berli Paripurna Kamiel, Department of Mechanical Engineering, Universitas Muhammadiyah Yogyakarta

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References

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