Optimization Study of Shaft System Vibration and Broken Tooth Fault Under the Influence of 3D Mixed Lubrication of Marine Diesel Engine Timing Gear System

Sun, Wen; Shi, Xiujiang; Lu, Xiqun; Hua, Deliang; Li, Renze; Liu, He

doi:10.1007/s42417-023-01237-4

Cited by 3 publications

(1 citation statement)

References 29 publications

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“…These methods utilize various techniques to analyze the condition of the lubricating oil within the pump system, providing valuable insights into pump health and performance. For instance, oil analysis techniques such as spectroscopy, chromatography, and viscosity measurement can detect contaminants, degradation products, and wear debris in the oil, indicating potential issues within the pump system [18,19]. Moreover, real-time monitoring systems, incorporating sensors and algorithms, enable continuous assessment of oil condition and pump operation, allowing for early detection of abnormalities and predictive maintenance strategies [20].…”

Section: Introductionmentioning

confidence: 99%

Micro and Macroscopic Analysis of Fatigue Wear of Gear Wheel Top Layer – an Impact Analysis of Thermochemical Treatment

Osiński,

Dudziński,

Deptuła

et al. 2024

Preprint

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The main purpose of this work was to tests of form and size of fatigue wear of the top layer of oil gear pump wheel (3PW-BPF-24). The object of tests was operated during a determined number of hours at strictly controlled operational and environmental parameters. A microscope of focal differentiation by Alicona InfiniteFocus G4 (with Focus-Variation optical measuring technology) was used for an identification, measurement and description of noticed superficial defects, which resulted from the fatigue process of the top layer and an earlier thermochemical treatment. The work was finished with an analysis of obtained results (based on the analysis of 3D scans) and conclusions concerning about optimization of the thermal treatment. Taking into consideration the presented results (suggestions) in the technology of improving strength properties of gear wheels (of this type oil pumps) may render it possible to obtain an appropriate fatigue endurance of the top layer, i.e. a minimization of observed superficial defects.

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Section: Introductionmentioning

confidence: 99%

Micro and Macroscopic Analysis of Fatigue Wear of Gear Wheel Top Layer – an Impact Analysis of Thermochemical Treatment

Osiński,

Dudziński,

Deptuła

et al. 2024

Preprint

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Dynamics modeling and analysis of planetary gear mechanism under mixed elastohydrodynamic lubrication

Ning,

Bai

2024

Simulation Modelling Practice and Theory

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Micro- and Macroscopic Analysis of Fatigue Wear of Gear Wheel Top Layer—An Impact Analysis of Thermochemical Treatment

Osiński,

Dudziński,

Deptuła

et al. 2024

Materials

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Today, there are many diagnostic methods and advanced measurement techniques enabling the correct diagnosis and assessment of the type and degree of wear of cogwheels (gears, pumps, etc.). The present study presents an analysis of the surface defects of a cogwheel of an oil pump prototype (3PW-BPF-24). The test object operated for a certain number of hours under controlled operating and environmental parameters. The damage to the surface layer was caused by fatigue phenomena and previous thermo-chemical treatment. On the basis of the significant percentage share (~30%) of residual austenite in the volume of the diffusion layer, a hypothetical conclusion was drawn about the suboptimal parameters of the thermo-chemical treatment process (in relation to the chemical composition of the analyzed pinion). A large number of research studies indicate that the significant presence of residual austenite causes a decrease in tooth surface hardness, the initiation of brittle cracks, a sharp decrease in fatigue strength, an increase in brittleness and a tendency to develop surface layer cracks during operation. High-resolution 3D scans of randomly selected pitting defects were used in the detailed study of the present work. It was indicated that the analysis of the morphology of surface defects allowed some degree of verification of the quality of the heat/chemical treatment. The martensitic transformation of residual austenite under controlled (optimum) repeated heat treatment conditions could significantly improve the durability of the pinion (cogwheel). In the case analyzed, the preferred treatment was the low-temperature treatment. The paper concludes with detailed conclusions based on the microscopic and macroscopic investigations carried out.

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Optimization Study of Shaft System Vibration and Broken Tooth Fault Under the Influence of 3D Mixed Lubrication of Marine Diesel Engine Timing Gear System

Cited by 3 publications

References 29 publications

Micro and Macroscopic Analysis of Fatigue Wear of Gear Wheel Top Layer – an Impact Analysis of Thermochemical Treatment

Micro and Macroscopic Analysis of Fatigue Wear of Gear Wheel Top Layer – an Impact Analysis of Thermochemical Treatment

Dynamics modeling and analysis of planetary gear mechanism under mixed elastohydrodynamic lubrication

Micro- and Macroscopic Analysis of Fatigue Wear of Gear Wheel Top Layer—An Impact Analysis of Thermochemical Treatment

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