Condition Monitoring of Kaplan Turbine Bearings Using Vibro-diagnostics

Monková, Katarína; Monka, Peter P.; Hric, Slavomir; Kozak, Dražan; Katinić, Marko; Pavlenko, Ivan; Liaposchenko, Oleksandr

doi:10.18178/ijmerr.9.8.1182-1188

Cited by 36 publications

(4 citation statements)

References 7 publications

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“…Condition based monitoring techniques [58], if introduced for rotating machinery, are most commonly based on vibration and lubrication monitoring [59]. These two techniques prove themselves valuable as they fall into the category of preventive prediction tools, where the monitored machinery can still be satisfactory repaired if unusual values of vibrations or dispensed particles are detected.…”

Section: Discussionmentioning

confidence: 99%

Marine Propulsion System Failures—A Review

Vizentin

Vukelić

Murawski

et al. 2020

JMSE

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Failures of marine propulsion components or systems can lead to serious consequences for a vessel, cargo and the people onboard a ship. These consequences can be financial losses, delay in delivery time or a threat to safety of the people onboard. This is why it is necessary to learn about marine propulsion failures in order to prevent worst-case scenarios. This paper aims to provide a review of experimental, analytical and numerical methods used in the failure analysis of ship propulsion systems. In order to achieve that, the main causes and failure mechanisms are described and summarized. Commonly used experimental, numerical and analytical tools for failure analysis are given. Most indicative case studies of ship failures describe where the origin of failure lies in the ship propulsion failures (i.e., shaft lines, crankshaft, bearings, foundations). In order to learn from such failures, a holistic engineering approach is inevitable. This paper tries to give suggestions to improve existing design procedures with a goal of producing more reliable propulsion systems and taking care of operational conditions.

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Section: Discussionmentioning

confidence: 99%

Marine Propulsion System Failures—A Review

Vizentin

Vukelić

Murawski

et al. 2020

JMSE

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“…Rolling bearings have seen fast progress in manufacturing and design over the last decade, with broad usage in a variety of sectors [1][2][3][4][5]. It is widely accepted that the application of rolling bearings has advantages in terms of reducing cost, size, weight, and friction.…”

Section: Introductionmentioning

confidence: 99%

An Experimental Study of Surface Damage on Rolling Bearings in Low Lambda Conditions

et al. 2023

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In order to better understand the occurrence of surface damage in low lambda, Λ, conditions, an experimental study was conducted. The surface damage investigations have been made based on the relationship between Λ values and surface roughness. In this study, the ball roughness, rotational speed, and oil viscosity were varied to obtain a specific Λ value which ranges from 0.10 to 0.90. It was found that three different surface damage modes, namely wear, micro-pitting, and no damage occurred depending on the ball roughness and Λ value. Morphological cross-sectional of each damage mode were observed, and surface fatigue characteristics were identified. The experimental results have shown that surface fatigue, including plastic flow thickness and crack angle, are related to contact conditions, which are influenced by surface roughness and oil film thickness.

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“…By performing vibrodiagnostics, machine faults can be identified. By eliminating the identified faults, the aforementioned aspects are again ensured [ 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

Research on the Oscillation in Centerless Grinding Technology When Machining Bearing Steel

et al. 2022

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In today’s engineering industry, technical diagnostics presents many advantages for improving the management of machining centers and automated production lines. As the fourth industrial revolution is currently being implemented, which includes machine diagnostics, the idea of adding information from the field of vibrodiagnostics was born. The vibration of the workpiece or machine tool negatively affects the geometric parameters of the machined surfaces of the workpiece. Through vibrodiagnostics, the influence of cutting parameters on the oscillation of a bearing steel workpiece during centerless grinding is investigated. The presented publication deals with the vibration of the mechanical parts of a centerless grinding machine. The oscillations are recorded by acceleration sensors, which are also placed on the support ruler in which the workpieces are guided, and the recorded data are input parameters for statistical processing of acceleration values in the form of statistical characteristics (minimum, lower quartile, median, upper quartile, maximum). In this paper, this procedure was applied for the selection of the optimum cutting parameters (for the speed of the support wheel), where the machining parameters at which the minimum oscillation values occur were selected based on the above-mentioned statistical characteristics. This optimization procedure revealed increased vibration values which reached the highest amplitude on the ruler, namely accelerations of 11 m/s2, the origin of which was subsequently detected by STFT because the occurrence of resonance events or the excitation of natural frequencies of the machine were suspected. The STFT analysis identified a resonant region at machine start-up determined by the spindle speed which excites the resonance on the machine. The speed range between 1950 and 2150 rpm, which corresponds to the built-up resonance, was provided to the technologists to ensure that the machine was not operated around this resonance region at 400 and 760 Hz until the undesired phenomenon was eliminated. The results of the individual measurements provided information on the ideal setting of the cutting parameters and the current state of the machine.

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Condition Monitoring of Kaplan Turbine Bearings Using Vibro-diagnostics

Cited by 36 publications

References 7 publications

Marine Propulsion System Failures—A Review

Marine Propulsion System Failures—A Review

An Experimental Study of Surface Damage on Rolling Bearings in Low Lambda Conditions

Research on the Oscillation in Centerless Grinding Technology When Machining Bearing Steel

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