Vibration based condition monitoring of a multistage epicyclic gearbox in lifting cranes

Assaad, Bassel; Eltabach, Mario; Antoni, Jérôme

doi:10.1016/j.ymssp.2013.06.032

Cited by 69 publications

(34 citation statements)

References 12 publications

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“…For this purpose, in order to identify localized gear faults, several CIs can be used for the evaluation of the vibration signal peakiness, which is correlated with the severity of the localized fault. In this study, the following standard CIs have been considered: kurtosis and Crest Factor (CF) [9,36]. Furthermore, the effectiveness of the proposed CIs, that is, CPF and NSVP, has been tested for the simulated vibration signals and the real case studies.…”

Section: Problem Statement and The Proposed Methodsmentioning

confidence: 99%

Diagnosis of Localized Faults in Multistage Gearboxes: A Vibrational Approach by Means of Automatic EMD-Based Algorithm

Buzzoni

Mucchi

D’Elia

et al. 2017

Shock and Vibration

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The gear fault diagnosis on multistage gearboxes by vibration analysis is a challenging task due to the complexity of the vibration signal. The localization of the gear fault occurring in a wheel located in the intermediate shaft can be particularly complex due to the superposition of the vibration signature of the synchronous wheels. Indeed, the gear fault detection is commonly restricted to the identification of the stage containing the faulty gear rather than the faulty gear itself. In this context, the paper advances a methodology which combines the Empirical Mode Decomposition and the Time Synchronous Average in order to separate the vibration signals of the synchronous gears mounted on the same shaft. The physical meaningful modes are selected by means of a criterion based on Pearson's coefficients and the fault detection is performed by dedicated condition indicators. The proposed method is validated taking into account simulated vibrations signals and real ones.

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Section: Problem Statement and The Proposed Methodsmentioning

confidence: 99%

Diagnosis of Localized Faults in Multistage Gearboxes: A Vibrational Approach by Means of Automatic EMD-Based Algorithm

Buzzoni

Mucchi

D’Elia

et al. 2017

Shock and Vibration

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“…The objective, in this case, is highlighting possible peculiarities of the SGM11 wind turbine operating under the wake of upstream SGM10, in terms of vibration spectra and drive-line speed fluctuations. Eventually, the link between phase fluctuations and turbulent flows has been further investigated by analyzing the residual signal [27] of the planetary annulus gear, which exhibits marked modulation phenomena likely caused by the wake effect.…”

Section: Gearbox Vibration Analysismentioning

confidence: 99%

“…It is a matter of fact [27] that speed fluctuations in gearboxes take the form of sidebands around the meshing frequency in the frequency spectrum. In order to make a clearer representation of the results reported in Figure 12, the Time Synchronous Average (TSA) [40] of the vibration signal referenced to the planetary annulus gear has been computed.…”

Section: Time-series (Ts) Active Power (Kw) Generatormentioning

confidence: 99%

Wind Turbine Loads Induced by Terrain and Wakes: An Experimental Study through Vibration Analysis and Computational Fluid Dynamics

et al. 2017

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Abstract:A wind turbine is a very well-known archetype of energy conversion system working at non-stationary regimes. Despite this, a deep mechanical comprehension of wind turbines operating in complicated conditions is still challenging, especially as regards the analysis of experimental data. In particular, wind turbines in complex terrain represent a very valuable testing ground because of the possible combination of wake effects among nearby turbines and flow accelerations caused by the terrain morphology. For these reasons, in this work, a cluster of four full-scale wind turbines from a very complex site is studied. The object of investigation is vibrations, at the level of the structure (tower) and drive-train. Data collected by the on-board condition monitoring system are analyzed and interpreted in light of the knowledge of wind conditions and operating parameters collected by the Supervisory Control And Data Acquisition (SCADA). A free flow Computational Fluid Dynamics (CFD) simulation is also performed, and it allows one to better interpret the vibration analysis. The main outcome is the interpretation of how wakes and flow turbulences appear in the vibration signals, both at the structural level and at the drive-train level. Therefore, this wind to gear approach builds a connection between flow phenomena and mechanical phenomena in the form of vibrations, representing a precious tool for assessing loads in different working conditions.

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“…Current techniques for safety assessment portal crane have visual inspection technique, ultrasonic testing technology [2], magnetic particle inspection techniques, stress and strain detection technology [3]. These techniques can reflect the health of crane metal structure, because the portal crane body of work from frequent braking, speed and load fluctuations, it has a very complex vibration characteristics, and the detection technology can not reflect portal cranes Vibration structural health state [4]. Therefore, it is necessary to add vibration testing technology to the crane fault diagnosis [5].…”

Section: Introductionmentioning

confidence: 99%

Research of Portal Crane Vibration Modal Analysis

Deng¹,

Guo²,

Jiang³

et al. 2016

Proceedings of the International Symposium on Mechanical Engineering and Material Science

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Abstract. Portal crane is an important port production machinery what frequently work in moist environment leads to greater structural damage. The weight of the metal structure is usually 60% to 90% of the whole weight. Steel Q235B material in the early is widely used in the portal crane design and manufacture. For more than a certain number of service life period of portal crane, it is necessary to do safety assessment to reflect their state of health. The traditional safety assessment cannot reflect the structure of the health portal crane vibration state, therefore, vibration testing was added to the portal crane fault diagnosis technology in the present study, which use ambient vibration modal analysis to test a portal crane, and acquired abnormal vibration signals, it is improve the safety assessment system, achieved the good test results.

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Vibration based condition monitoring of a multistage epicyclic gearbox in lifting cranes

Cited by 69 publications

References 12 publications

Diagnosis of Localized Faults in Multistage Gearboxes: A Vibrational Approach by Means of Automatic EMD-Based Algorithm

Diagnosis of Localized Faults in Multistage Gearboxes: A Vibrational Approach by Means of Automatic EMD-Based Algorithm

Wind Turbine Loads Induced by Terrain and Wakes: An Experimental Study through Vibration Analysis and Computational Fluid Dynamics

Research of Portal Crane Vibration Modal Analysis

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