Failure investigation of a taper roller bearing: A case study

Gurumoorthy, K.; Ghosh, Arindam

doi:10.1016/j.csefa.2013.05.002

Cited by 21 publications

(18 citation statements)

References 5 publications

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“…Bakelite mounted and polished cut sections were used for metallographic observation and hardness measurements. The microstructure was studied after etching with 3% Nital [3,4].…”

Section: Methodsmentioning

confidence: 99%

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Lubricant Failure Analysis of Roll Neck Bearings of Wire Rod Mill: A Case Study

Arun¹,

J²,

Eswaraiah³

et al. 2017

Nctet-2k17

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“…Bakelite mounted and polished cut sections were used for metallographic observation and hardness measurements. The microstructure was studied after etching with 3% Nital [3,4].…”

Section: Methodsmentioning

confidence: 99%

“…But the main cause of their failure is due to poor lubrication, which can be easily avoided by a correct maintenance plan [3].…”

Section: Introductionmentioning

confidence: 99%

Lubricant Failure Analysis of Roll Neck Bearings of Wire Rod Mill: A Case Study

Arun¹,

J²,

Eswaraiah³

et al. 2017

Nctet-2k17

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“…However, premature failure of the bearing may also be caused due to improper design, selection, handling of bearing, and installation procedures [1,2].…”

Section: Introductionmentioning

confidence: 99%

Failure Investigation of Differential Pinion Tapered Roller Bearing

Gurumoorthy¹,

Dayma²,

Rawat³

et al. 2015

J Fail. Anal. and Preven.

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Premature bearing failures can be attributed to several factors such as improper selection of bearing, rise in temperature, corrosive media, dirt, abusive handling, improper installation, and servicing practices. In the present study, damage analysis made on the prematurely failed differential pinion tapered roller bearing is discussed. A detailed metallurgical analysis is carried out on the failed bearing and the probable root cause was traced to higher preload on the bearing resulting in temperature rise and degradation of lubrication. Excessive preload caused rubbing of rollers against the cone rib leading to temperature rise. This in turn degraded the lubricant and caused eventual seizure. The steep rise in temperature was confirmed by the presence of untempered martensitic structure in the raceway load zone of the cone.

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“…As a consequence of this different physical domain, accelerometers operate at much lower frequencies than AE sensors, typically up to [10][11][12][13][14][15][16][17][18][19][20] kHz instead of hundreds of kHz, corresponding to larger wavelengths and therefore involving motion of the structure as a whole. The low frequency vibrations from small race defects generate negligible energy to the system compared with the surrounding noise, thus hindering early detection of faults through accelerometers.…”

Section: Acoustic Emissionmentioning

confidence: 99%

“…Contact fatigue, which usually leads to single-point faults, accounts for a large percentage of bearing failure [14,17,18]. [19,20].…”

Section: Bearing Dynamics and Degradationmentioning

confidence: 99%

Multi-Sensor Condition Monitoring of Bearings Using Support Vector Machines

Kan¹

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Keywords AbstractBearings are one of the most commonly-used and crucial components in the majority of rotating machines in industrial applications. Failure of this component is common and can lead to machine breakdown. If it is not detected in time, bearing faults can even lead to catastrophic failures. An effective diagnostic system provides early warning and fault identification such that any machine breakdown can be avoided. Condition monitoring can benefit plant operators resulting in shorter downtimes, higher operation reliability, reduced operations and maintenance cost, and more effective maintenance and logistics planning.However, machines and associated systems today are increasingly complex, while diagnostic techniques have been mainly applied to relatively simple rotating machines. Therefore, there is a need for research on condition monitoring techniques that can be applied to complex systems in variable operating conditions. This thesis presents a study on bearing condition monitoring under variable operating condition using Support Vector Machines. Data collected from multiple sensors including accelerometers, acoustic emission sensors and tachometers are used for the studies presented in this thesis. Support Vector Machines are an efficient method for classification and prediction, and shows outstanding performance in modelling and generalization.The study begins with collecting bearing condition monitoring data. Vibration analysis is a well-established technique, while acoustic emission is gaining an increasing amount of attention especially on its capability to detect bearing incipient fault such as subsurface cracks. Existing studies so far have not demonstrated AE's diagnostic capabilities using naturally-damaged bearing, and only a very few studies adopt envelope and cyclostationary analysis on bearing fault diagnosis with this sensor technology. Due to the second-order cyclostationary nature of bearing signals and the success of envelope analysis in analysing bearing signals, the diagnostic and prognostic studies presented in this thesis make use of both envelope analysis and cyclostationary analysis to analyse vibration and acoustic emission bearing signals that will be collected from bearing diagnostics and run-to-failure prognostic experiments through a bearing diagnostic test-rig and a bearing prognostic test-rig.Using the collected data, the effectiveness and diagnostic capability of cyclostationary analysis will first be assessed using feature analysis with support vector machine. A diagnostic study is then conducted, investigating the diagnostic effectiveness of acoustic emission and its superiority to vibration, especially in the detection of bearing subsurface cracks. Through comparison of AE with vibration signals, this study confirms AE's superiority in detecting subsurface cracks in bearings and the absence of vibration symptoms of subsurface cracks.This diagnostic study has also shown the crucial ability of the cyclic logarithmic envelope iii spectrum in separating different cyc...

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Failure investigation of a taper roller bearing: A case study

Cited by 21 publications

References 5 publications

Lubricant Failure Analysis of Roll Neck Bearings of Wire Rod Mill: A Case Study

Lubricant Failure Analysis of Roll Neck Bearings of Wire Rod Mill: A Case Study

Failure Investigation of Differential Pinion Tapered Roller Bearing

Multi-Sensor Condition Monitoring of Bearings Using Support Vector Machines

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