The Shock-pulse method for the detection of damaged rolling bearings

Lubricant (grease) is a vital requirement of ball bearing system. Grease not only protects ball bearing from wear and tear but performs various other functions that are essential for proper functioning of ball bearings. The lubricant (grease) under different conditions attains different properties which in turn affect the performance of the ball bearings. The effect of the condition of the lubricants on the performance of the ball bearings is well documented. the work reports about the investigation of ball bearing using shock pulse method by using two different instruments (Tester T2000 Model and Shock Pulse Meter 43A) of different operating conditions of ball bearing the condition such as used the quantity of grease as different percentage (0%, 25%, 50%, 75%, 100%) and bad quality grease (burn grease) at different rpm at a fixed load (10kg) and compare the normalized shock pulse value (dB) at different operating conditions. This method uses a piezo-electric accelerometer superimposed electrically as well as mechanically to about 32 kHz of resonant frequency. The result will help in bearing related to quantity as well as quality condition based maintenance choosing the optimum conditions for detecting the lubricant problem in ball bearing.

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Early Shock Pulse Detection Method for Rolling Bearings Condition Monitoring

10.1109/sdemped51010.2021.9605554 ◽

2021 ◽

Author(s):

K. Saarinen ◽

J. Nowak

Keyword(s):

Condition Monitoring ◽

Detection Method ◽

Shock Pulse ◽

Rolling Bearings ◽

Pulse Detection

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Analog Circuit Based on the Shock Pulse Method and Its Application in Fault Diagnosis of Bearing

Mathematical Modelling and Engineering Problems ◽

10.18280/mmep.030106 ◽

2016 ◽

Vol 3 (1) ◽

pp. 35-38

Author(s):

Yanzhong Li ◽

Zheng Liu ◽

Zengqiang Ma

Keyword(s):

Fault Diagnosis ◽

Analog Circuit ◽

Pulse Method ◽

Shock Pulse

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On the informativeness of the shock pulse method for controlling the geocomposite constructions strength

E3S Web of Conferences ◽

10.1051/e3sconf/201910900072 ◽

2019 ◽

Vol 109 ◽

pp. 00072

Author(s):

Liliia Prokhorets

Keyword(s):

Pulse Duration ◽

Experimental Studies ◽

Pulse Method ◽

Close Correlation ◽

Building Industry ◽

Regression Equations ◽

Shock Pulse ◽

Informative Parameter ◽

Uniaxial Compression Strength ◽

Correlation Relationship

This article shows the possibility of using the shock impulse method widely used in the building industry for the control of above-ground concrete structures in relation to elements of underground geocomposite protective constructions. As a result of experimental studies performed in the laboratory on various mortar mixtures that harden, it was established that there is a close correlation relationship between two data arrays: the values of the shock pulse duration and the uniaxial compression strength. The reliability of the obtained regression equations is in the range of 0.82 - 0.9. This shows the possibility of using the shock pulse method in the new version, with the previously unused informative parameter - the shock pulse duration for assessing the strength of mortar mixes that harden, which are widely used to create geocomposite constructions.

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Detection of Defects at Different Locations in Ball Bearings by Vibration and Shock Pulse Monitoring

Noise & Vibration Worldwide ◽

10.1260/095745603321537983 ◽

2003 ◽

Vol 34 (3) ◽

pp. 9-16 ◽

Cited By ~ 3

Author(s):

N. Tandon ◽

K.S. Kumar

Keyword(s):

Pulse Method ◽

Maximum Load ◽

Zone Axis ◽

Ball Bearings ◽

Shock Pulse ◽

Low Speed ◽

Outer Race ◽

Defect Detectability ◽

Detection Of Defects

In the present study, the vibrations and shock pulse values of good and defective bearings have been measured. Bearings with one defect and two defects (with different degrees of separation) on the outer race have been used. The position of the defects with respect to the maximum load zone axis was also varied. The study shows that it is easier to detect defects on the outer race of bearings when the defects are in the maximum load zone. The vibration levels and shock pulse values decrease with increase in angle between two defects. The levels decrease as the defects are moved away from the maximum load position. Shock pulse method showed better defect detectability as compared to overall vibration levels. However, at low speed, the shock pulse method has not proved to be as effective as at higher speeds.

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