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Crest Factor Measurement by Experimental Vibration Analysis for Preventive Maintenance of Bearing
Abstract This paper elaborates about the vibration and its effect for the rotary machines and presents experimental vibration technique for fault detection in bearings [1]. Bearings are very important part in any rotating machine. The rotary machines are subjected to variable speed range according to the type of operations to be performed and other operative conditions [2]. One of the causes for the vibration is bearing wear which may occurs due to Pitting, scratching, misalignment of shafts etc. There are many techniques to find and measure the vibration in the system [4]. One of the methods i.e. measurements by calculating crest factor which is discussed in this paper. Crest factor is defined as the ratio of the peak value of a waveform to its RMS value; which is also called as “peak-to-RMS-ratio” [3]. This paper gives comparative analysis between damaged and healthy Roller and Ball bearings these may be taken the baseline for the preventive maintenance. To perform experimental measurements of vibration amplitude in axial and radial directions FFT analyzer and accelerometer is used. From the experimentation crest factors were found and compared with healthy bearings to conclude about the defective bearings. Bearings with damages showed higher crest values as compared with the healthy bearing [7].
Crest Factor Measurement by Experimental Vibration Analysis for Preventive Maintenance of Bearing
Abstract This paper elaborates about the vibration and its effect for the rotary machines and presents experimental vibration technique for fault detection in bearings [1]. Bearings are very important part in any rotating machine. The rotary machines are subjected to variable speed range according to the type of operations to be performed and other operative conditions [2]. One of the causes for the vibration is bearing wear which may occurs due to Pitting, scratching, misalignment of shafts etc. There are many techniques to find and measure the vibration in the system [4]. One of the methods i.e. measurements by calculating crest factor which is discussed in this paper. Crest factor is defined as the ratio of the peak value of a waveform to its RMS value; which is also called as “peak-to-RMS-ratio” [3]. This paper gives comparative analysis between damaged and healthy Roller and Ball bearings these may be taken the baseline for the preventive maintenance. To perform experimental measurements of vibration amplitude in axial and radial directions FFT analyzer and accelerometer is used. From the experimentation crest factors were found and compared with healthy bearings to conclude about the defective bearings. Bearings with damages showed higher crest values as compared with the healthy bearing [7].
Crest Factor Measurement by Experimental Vibration Analysis for Preventive Maintenance of Bearing
Kondhalkar, Ganesh Eknath (author) / Diwakar, Girikapati (author)
2019-06-14
6 pages
Article/Chapter (Book)
Electronic Resource
English
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