Monitoring of the Damage in Rolling Element Bearings

Chatterton, Steven; Borghesani, Pietro; Pennacchi, Paolo; Vania, A.

doi:10.1007/978-3-319-09918-7_86

Mechanisms and Machine Science

2014

DOI: 10.1007/978-3-319-09918-7_86

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Monitoring of the Damage in Rolling Element Bearings

Steven Chatterton

Pietro Borghesani

Paolo Pennacchi

et al.

Abstract: Envelope Analysis of vibration signal is the most used and simplest method for the diagnostics of rolling element bearings. This method is based on the identification of bearing damage frequency components in the so-called Envelope Spectrum. If the recognition of the damage type is quite a simple task, the monitoring and the evaluation of the trend of a suitable damage index are complex tasks\ud to be performed in an automatic way. The damage index must be robust against variations of system operating conditio… Show more

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Cited by 2 publications

References 17 publications

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A new method for the estimation of bearing health state and remaining useful life based on the moving average cross-correlation of power spectral density

Pennacchi

Chatterton

2020

Mechanical Systems and Signal Processing

Self Cite

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In the broad framework of condition-based maintenance, the final objective of bearing condition monitoring is to evaluate the health state and to estimate the remaining useful life of the bearings. The latter is a particularly challenging task, considering that remaining useful life is inextricably linked to a projection of what will happen in the future. Often, health indices, whose reliability relies on their effectiveness and consistency, are used for bearing condition monitoring. Most of the existing health indices pursue the property of monotonicity, but generally there are no obvious boundaries between the different health states of the bearings. Hence, it is quite difficult to give an objective and independent estimation of the health states, especially in real applications under different operating conditions and in the presence of noise. Furthermore, it is also difficult to set the failure threshold for a given health index when it is employed in different applications. In this paper, a new health index called 'MAC 2 PSD' is proposed, based on the moving-average cross-correlation (MAC 2) of the power spectral density (PSD) of the vibration signals. An interesting property of MAC 2 PSD is its capability to track the health condition and to discriminate clearly between the different health states. As shown in the paper, the MAC 2 PSD can also be used to estimate the remaining useful life by using its values during the defect-propagation phase. The effectiveness of MAC 2 PSD is shown by means of two different cases of bearing run-to-failure experimental data, from two different test rigs. Additionally, the capability to avoid false positives is evaluated by means of bearing vibration data measured on a locomotive in commercial service.

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A new method for the estimation of bearing health state and remaining useful life based on the moving average cross-correlation of power spectral density

Pennacchi

Chatterton

2020

Mechanical Systems and Signal Processing

Self Cite

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An analysis of vibration signals is conducted to monitor the condition of the clutch of a centrifugal pump, employing ISO 10816 standards

Martianis,

Syam,

Isranuri

et al. 2024

E3S Web Conf.

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Vibration in the shaft of a centrifugal pump arises from various factors, including the spacing between clutches, belt thickness, width, and their positioning within the clutch assembly. Vibration serves as a vital diagnostic tool for assessing machinery, offering insights into both motion and translation. Understanding vibrations and analyzing corresponding data are essential for effective maintenance and troubleshooting protocols. By leveraging this knowledge, companies can mitigate downtime, enhance productivity, and extend the operational lifespan of their machinery. Vibration stems from cyclic forces acting upon machine components, triggering energy release within the structure and resulting in oscillations. Excessive vibration not only generates noise but also compromises pump performance and jeopardizes critical components, notably the shaft and bearings. The objective of this study is to monitor and analyze vibration in centrifugal pumps equipped with modified belt connections. Various configurations of belt thickness, width, distance, and positioning were explored. Real-time data was gathered using accelerometer sensors to capture X, Y, and Z-axis values, subsequently converted from analog to digital format. Among the configurations tested, the Outside-Inside belt positioning, with belt dimensions of 6.5mm thickness, 150mm width, and a 40mm distance, exhibited the lowest average vibration value at 8.72mm/s. However, according to ISO 10816 standards, this measurement falls within the unsatisfactory category, indicating the need for further refinement in pump design and maintenance practices.

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Monitoring of the Damage in Rolling Element Bearings

Cited by 2 publications

References 17 publications

A new method for the estimation of bearing health state and remaining useful life based on the moving average cross-correlation of power spectral density

A new method for the estimation of bearing health state and remaining useful life based on the moving average cross-correlation of power spectral density

An analysis of vibration signals is conducted to monitor the condition of the clutch of a centrifugal pump, employing ISO 10816 standards

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