Investigation for Distributed defects in  Ball bearing using Vibration Signature  Analysis– A Review

Kulkarni Sham S; S.B. Wadkar

Volume : II, Issue : XI, November - 2013

Investigation for Distributed defects in Ball bearing using Vibration Signature Analysis– A Review

Kulkarni Sham S, S. B. Wadkar

Abstract :

Rolling element be�s are extensively used in most of rotating machinery. For its precise & efficient performance it is necessary to monitor the condition of rolling element be� to avoid catastrophic failure of machinery. This paper presents the review of Viation signature analysis of ball be� with distributed defects on surfaces of inner & outer races. Distributed defects include surface roughness, waviness, off size rolling element & misaligned races. These are caused due to manufacturing error & operating conditions. The main objective of this review is to investigate the effect of distributed defects in ball be� on viation signature. The effect produced by local defects in stationary condition becomes more severe in non–stationary condition & spreads to form distributed defects. Traditional techniques of viation signature analysis are available for the detection of be� fault. But when signals are complex & non stationary, these techniques have limitation to diagnose faulty signal. Wavelet Transform is time frequency analysis method gives better performance for analyzing non– stationary signal various parameters like defect type, defect location & defect size for variable speed & load condition is reviewed.