Identification of the Technical Condition of Roller Bearings by means of Vibrodiagnostics and Tribodiagnostics

Furch, Jan; Glos, Josef; Nguyen, Trung Tin

doi:10.21278/tof.41309

Cited by 9 publications

(9 citation statements)

References 6 publications

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“…Determination of the technical condition of axle housing in a vehicle by means of vibrodiagnostics is discussed in the publication by Furch et al, who describe an experiment in which the vibrations of the axles located in the vehicle axle housing were measured, and the analysis of the measured data was then performed. Subsequently, they analyzed the lubricant samples used for the lubrication of the tested rolling element bearings [12]. Properly chosen technical diagnostics and follow-up measures based on the knowledge of the real condition of the machinery are the main steps that lead to its increased operational ability.…”

Section: Literature Reviewmentioning

confidence: 99%

Research into Correlation between the Lubrication Mode of Contact Surfaces and Dynamic Parameters of Turbo-Generator Transmissions

Kočiško

Baron

Török

et al. 2019

Advances in Materials Science and Engineering

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e paper presents the results of an experimental study aimed at assessing the correlation between the measurement of dynamic parameters (vibration, high-frequency vibration, and acoustic emission) and the analysis of friction mode and the state of lubrication of the contact surfaces of two gearboxes in the turbo-generator assembly (high-speed single-body steam turbine-gearbox-generator) with the transmission power of no more than 50 MW. e analysis confirmed the assumption of a significant correlation of the monitored high-frequency vibration signal with the unsatisfactory engagement of the gear teeth.rough vibration analysis, an increased level of the tooth vibration component and vibration multiples with increased acoustic emission were identified in gearbox operation. e gear oil of one of the gearboxes examined showed a loss of additive elements in the real operation of the contact surfaces of the teeth engagement. e trend analysis confirmed the complexity of the monitored transmission operation in terms of the friction mode and the influence of the oil quality on the state of the tooth flank microgeometry.

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Section: Literature Reviewmentioning

confidence: 99%

Research into Correlation between the Lubrication Mode of Contact Surfaces and Dynamic Parameters of Turbo-Generator Transmissions

Kočiško

Baron

Török

et al. 2019

Advances in Materials Science and Engineering

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“…6. For the experimental analysis, we selected the measurement at 1200 RPM of the shaft [12]. Table 6 shows the calculation results of the frequencies of typical bearing failures for the shaft revolving at 1200 RPM.…”

Section: Example Of An Experimental Mechanical Vibration Measurement mentioning

confidence: 99%

Dynamics simulation of mechanical gearbox vibration

Furch

Tran

2018

MATEC Web Conf.

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This paper focuses on creating a virtual model of mechanical gearbox used in medium-sized terrain vehicle using MSC.Adams software. This software is regarded as the most common and effective tool to simulate the gearbox as multibody system and to record and analyse the vibration signal from the gearbox. The paper makes an overview of modelling and simulation and performs an analysis with frequency spectrum. The paper demonstrates that it is possible to simulate vibration signals through the model of the gearbox created in 3D CAD software and then analyse in multi-body dynamics software MSC.Adams. Successful application of the virtual model not only help us decrease the cost of design work, but also help us identify the patterns of the vibration signal and the relations between the signal and the technical condition of the gearbox. The goal is to create a virtual model of a mechanical gearbox. In MSC.Adams, the vibration values of the rotating components can be detected in different gears. These values are then analysed and evaluated. The result is a simulation of fault states and identification of vibration frequencies for practical applications.

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“…The basic way of describing oscillations is to determine their displacement x, velocity v, acceleration a, maximum value A max , the root of mean square RMS, and the average value A ave [6].…”

Section: Possibilities Of Determining the Technical Condition Of Rollmentioning

confidence: 99%

“…This is made possible by using a mathematical model describing the technical condition of a machine during its life. The aim of our paper is to describe the technical condition of the vehicle mechanical gearbox by means of vibrodiagnostics [5].…”

Section: Introductionmentioning

confidence: 99%

Vibrodiagnostics Used for Evaluating the Technical Condition of a Mechanical Gearbox

2018

Self Cite

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The aim of this article is to evaluate the technical condition of a mechanical four-speed gearbox tightly connected to a mechanical two-speed auxiliary gearbox placed in an off-road vehicle. When observing the technical condition of the mechanical gearbox, we used one of technical diagnostics methods, namely vibrodiagnostics. The mechanical gearbox was monitored during all its life cycle up to failure occurrence. In the article there is a detailed description of the stand where the gearbox technical condition was monitored. When observing vibration signals, we used four tri-axial sensors placed in four selected spots depending on the design arrangement of antifriction bearings. In order to evaluate the measured results, two methods were applied, namely the root mean square gRMS based on the measured acceleration in three axes. The other method used for monitoring the technical condition was the Crest factor. The aim of the experiment was to monitor the technical condition of the mechanical gearbox, mainly its antifriction bearings, therefore the values were measured when the gear was put into fourth position and into overdrive in the auxiliary gearbox. When the gear is put into fourth position, the torque is transmitted from the motor through the main gearbox and the auxiliary gearbox directly. Single gearbox wheels are engaged but not loaded (they do not transmit the torque). At the end of our article we introduced the measured values along with the oral evaluation of the technical condition of the mechanical gearbox and the auxiliary gearbox.

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Identification of the Technical Condition of Roller Bearings by means of Vibrodiagnostics and Tribodiagnostics

Cited by 9 publications

References 6 publications

Research into Correlation between the Lubrication Mode of Contact Surfaces and Dynamic Parameters of Turbo-Generator Transmissions

Research into Correlation between the Lubrication Mode of Contact Surfaces and Dynamic Parameters of Turbo-Generator Transmissions

Dynamics simulation of mechanical gearbox vibration

Vibrodiagnostics Used for Evaluating the Technical Condition of a Mechanical Gearbox

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