Title: 330 Diagnosis using Wavelet Analysis for Vibration when Lubricant in Bearings is Reduced
Abstract: An abnormal vibration is measured when lubricant in bearings is reduced. It is found that the abnormal vibration changes from intermittent low frequency vibration to steady high frequency vibration as the lubricant decrease. Repetition factors are used to detect abnormal vibrations. The repetition factors are normalized with the largest vibration amplitude of each frequency component. So this diagnosis method can detect intermittent vibration and small vibration on beginning of failure. This diagnosis methodis applied to measured vibration and demonstratedits availability.