Effect of Radial Clearance on Ball Bearing’s Dynamics Using a 2-DOF Model

Ambrożkiewicz, Bartłomiej; Litak, Grzegorz; Georgiadis, Anthimos; Syta, Arkadiusz; Meier, Nicolas; Gassner, Alexander

doi:10.2507/ijsimm20-3-568

Cited by 8 publications

(4 citation statements)

References 33 publications

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“…With bearing failure, shaft friction increases, causing a further temperature rise in the bearings and increased energy loss. Damage can also be caused by radial clearance, which initially appears as localized pitting on the bearing [65]. This can occur on the inner raceway, outer raceway, cage or ball surface [66].…”

Section: Methodsmentioning

confidence: 99%

Induction Motor Bearing Fault Diagnosis Based on Singular Value Decomposition of the Stator Current

2023

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Among the most widespread systems in industrial plants are automated drive systems, the key and most common element of which is the induction motor. In view of challenging operating conditions of equipment, the task of fault detection based on the analysis of electrical parameters is relevant. The authors propose the identification of patterns characterizing the occurrence and development of the bearing defect by the singular analysis method as applied to the stator current signature. As a result of the decomposition, the time series of the three-phase current are represented by singular triples ordered by decreasing contribution, which are reconstructed into the form of time series for subsequent analysis using a Hankelization of matrices. Experimental studies with bearing damage imitation made it possible to establish the relationship between the changes in the contribution of the reconstructed time series and the presence of different levels of bearing defects. By using the contribution level and tracking the movement of the specific time series, it became possible to observe both the appearance of new components in the current signal and the changes in the contribution of the components corresponding to the defect to the overall structure. The authors verified the clustering results based on a visual assessment of the component matrices’ structure similarity using scattergrams and hierarchical clustering. The reconstruction of the time series from the results of the component grouping allows the use of these components for the subsequent prediction of faults development in electric motors.

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Section: Methodsmentioning

confidence: 99%

Induction Motor Bearing Fault Diagnosis Based on Singular Value Decomposition of the Stator Current

2023

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“…Nguyen [5] aimed at proposing an integrated generalized discriminant analysis method for bearing fault diagnosis. Ambrozkiewicz [6] established a 2-DOF model and studied the influence of radial clearance on ball bearing dynamics. Cheng [7] studied the load distribution and contact of rolling bearings.…”

Section: Introductionmentioning

confidence: 99%

Research on Anti-Wear Properties of Nano-Lubricated High-Speed Rolling Bearings under Various Working Conditions

2023

Teh. vjesn.

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Under high-speed and light-load conditions, rolling bearings often suffer from skid damage and wear. Nano-lubrication could inhibit the wear failure of mechanical parts. Therefore, in this manuscript, nano-lubrication technology is adopted to improve the anti-wear performance of rolling bearings. Nano-mixed oil with different particle sizes and concentrations of silica nanoparticles are prepared. Based on an improved rolling bearing test rig, the friction coefficient, wear depth, and real-time temperature rise under different operating conditions are studied, and the friction and anti-wear mechanisms of the nano-lubricated high-speed rolling bearings are obtained.The results show that the wear failure of the light-load rolling bearings decreased by using nano-lubricated mixture oil. There is no direct correlation between the friction coefficient and wear depth in the rolling bearings. Moreover, the use of nano-lubrication can effectively suppress the wear of rolling bearings, especially in the absence of sufficient oil.This study can provide an effective support for nano-lubrication and its application in anti-wear of rolling bearings.

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“…Rolling bearings are one of the most critical components in rotating machinery. According to many studies [1,2], about 40% of failures of electric motors are caused by bearings. Therefore, bearings play one of the essential roles in condition monitoring.…”

Section: Introductionmentioning

confidence: 99%

Rolling Bearing Fault Detection in the Range of Ultrasound

2023

Teh. vjesn.

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Acoustic signals have been used widely to detect the integrity of metal parts and the soundness of their contact. Diverse methods are developed to evaluate the actual quality of metal-to-metal contact having a lubricating layer. These methods are sensitive to the sound waves resulting from the sliding and rolling contact of the adjacent items. The ongoing research and operational experience created an effective and reliable method for acoustic detection of rolling bearing damage. Sound waves are detected by an appropriate transducer (sensor). The signal is processed, and the resulting root-mean-square (RMS) voltage is tracked. An increase in the voltage level indicates deterioration in bearing conditions. In practice, however, such an application almost always involves several considerations, including a significant amount of interfering background noises, unacceptable sound wave attenuations, and inaccessibility of the desired sensor locations.

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Effect of Radial Clearance on Ball Bearing’s Dynamics Using a 2-DOF Model

Cited by 8 publications

References 33 publications

Induction Motor Bearing Fault Diagnosis Based on Singular Value Decomposition of the Stator Current

Induction Motor Bearing Fault Diagnosis Based on Singular Value Decomposition of the Stator Current

Research on Anti-Wear Properties of Nano-Lubricated High-Speed Rolling Bearings under Various Working Conditions

Rolling Bearing Fault Detection in the Range of Ultrasound

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