Journal of Tribology: Recent submissions
Now showing items 621-640 of 7312
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Study on Lubricating Performance of the Bubbly Oil Under High Shear Rate—Part 2: Application Study in High-Speed Bearing
(The American Society of Mechanical Engineers (ASME), 2023)This paper aims to investigate the lubricating performance of the bubbly oil. Due to space limitation, the work is divided into two parts. Part 1 concluded that the bubbly oil under high shear rate has a lower viscosity ... -
Study on Lubricating Performance of the Bubbly Oil Under High Shear Rate—Part 1: Generation Method and Viscosity Measurement of the Bubbly Oil
(The American Society of Mechanical Engineers (ASME), 2023)Bubbly oil lubrication is a type of lubrication method that has a high potential for application. However, the lubricating performance of the bubbly oil has not been thoroughly considered. This paper aims to investigate ... -
Numerical Analysis of Turbulence Effect for Coupled Journal-Thrust Water-Lubricated Bearing With Micro Grooves
(The American Society of Mechanical Engineers (ASME), 2023)The purpose of this study is to assess the role of turbulence on the lubrication performances of coupled journal-thrust water-lubricated bearing with micro grooves using a numerical model. The results of the simulation ... -
Point Contact Thermal Mixed Elastohydrodynamic Lubrication Under Short-Period Intermittent Motion
(The American Society of Mechanical Engineers (ASME), 2023)To improve mechanical efficiency, the tribological performance of short-period intermittent motion needs to be investigated. Based on the theory of thermal elastohydrodynamic lubrication (EHL) and considering the influences ... -
Electrical Contact During a Rolling Vibratory Motion Considering Mixed Lubrication
(The American Society of Mechanical Engineers (ASME), 2023)In many devices and applications, electrical contacts are exposed to vibrations, sliding, or rolling conditions and are prone to fretting-based degradation. Thus, lubricants are often employed in such contacts to reduce ... -
Interaction Between Gear Surface Wear and Contact Fatigue
(The American Society of Mechanical Engineers (ASME), 2023)A methodology is proposed to study the interplay between tooth wear and contact fatigue under elastohydrodynamic lubrication condition. The modeling methodology includes the influence of contact fatigue on wear and the ... -
Multi-Objective Optimization of Three-Stage Running-In Process for Main Bearing of Marine Diesel Engine
(The American Society of Mechanical Engineers (ASME), 2023)Running-in quality can be improved by optimizing the running-in parameters (load, speed, and running-in time). The relationship between running-in quality and the fractal dimensions of friction signal and wear surface is ... -
Investigations of the Bump Foil Bearing With Thick Top Foil Based on Contact Mechanics
(The American Society of Mechanical Engineers (ASME), 2023)Traditional bump foil bearing, though widely used, is considered to have the problem of inadequate load capacity due to the effect of foil sag between adjacent bumps. In this paper, the thick top foil is applied to cope ... -
Experimental Study on the Effect of Off-Sized Rollers on the Dynamic Load Distribution in a Cylindrical Roller Bearing
(The American Society of Mechanical Engineers (ASME), 2023)The differences in the roller diameters within a roller bearing are unavoidable in practice, which is known as the off-sized effect. The off-sized effect results in the dynamic variation of the load distribution in bearings ... -
A Novel Incipient Fault Detection Technique for Roller Bearing Using Deep Independent Component Analysis and Variational Modal Decomposition
(The American Society of Mechanical Engineers (ASME), 2023)Roller bearing failure can result in downtime or the entire outage of rotating machinery. As a result, a timely incipient bearing defect must be diagnosed to ensure optimal process operation. Modern condition monitoring ... -
Influence of Free Water Droplets on Film Formation Under Point Contact Grease Lubrication
(The American Society of Mechanical Engineers (ASME), 2023)The influence of the grease-water two-phase emulsion on the bearing tracks on the film formation has been studied by carrying out optical interferometry experiments on a ball disk test rig to observe the dynamic film-forming ... -
Positron Annihilation and EBSD Studies of Subsurface Zone Created During Friction in Vanadium
(The American Society of Mechanical Engineers (ASME), 2023)Positron lifetime and electron backscatter diffraction studies were performed on pure vanadium samples subjected to the sliding test. The changes in the microstructure produced in this test are extending even to a depth ... -
Tribological Performance of Laser Shock Peened Cold Spray Additive Manufactured 316L Stainless Steel
(The American Society of Mechanical Engineers (ASME), 2023)In recent years, cold spray additive manufacturing (CSAM) has become an attractive technology for surface modification and protection. However, due to the intrinsic porous nature of CSAM coatings, they suffer from rapid ... -
Elevated Temperature Wear Behavior of AZ91 Magnesium Alloy After Micro-Arc Oxidation in Single and Dual Phase Electrolytes
(The American Society of Mechanical Engineers (ASME), 2023)Low wear resistance of AZ91 alloy is the main factor limiting its more common use in industrial applications. Therefore, the micro-arc oxidation (MAO) process is mostly applied to the alloy to improve its wear resistance ... -
Developing Elastic–Plastic Material Models for Pressure Measurement Films in a Steel–Steel Contact for Smooth and Rough Surfaces
(The American Society of Mechanical Engineers (ASME), 2023)The contact zone between two steel components can be identified by utilizing a pressure measurement film in the contact between them. To reduce the number of necessary experiments, it is possible to simulate the contact ... -
On the Lubrication and Stability Behaviors of a Conical Hybrid Floating Ring Bearing With Thermal Effects
(The American Society of Mechanical Engineers (ASME), 2023)The conical bearing can withstand both journal and axial load because of the conical-shape fluid film, and an investigation concerning the thermodynamic lubrication and stability properties is proposed for a conical ... -
Simplified Calculation of Recess Pressure Considering the Hydrodynamic Effect
(The American Society of Mechanical Engineers (ASME), 2023)The hydrostatic journal bearing’s recess pressure is to be determined using a novel approach. This method treats the circumferential bearing lands on both sides of recesses as infinitely long bearings, and the axial bearing ... -
Tribological Evaluation of Few-Layer Nitrogen-Doped Graphene as an Efficient Lubricant Additive on Engine Cylinder Liner: Experiment and Mechanism Investigation
(The American Society of Mechanical Engineers (ASME), 2023)The restricted adsorption capacity of ordinary graphene at high temperature limits its application in engine lubrication. To address this, nitrogen-doped element-modified graphene with strong adsorption and superior ... -
On the Uniqueness of Wear Coefficient for Abrasive Wear at Nanoscale
(The American Society of Mechanical Engineers (ASME), 2023)Materials wear is often characterized by empirical relations as the physical and chemical interactions at sliding interfaces are not fully understood at any length scale. Recent studies showed that these wear relations do ... -
Tribological Characteristics of Copper-Based Functionally Gradient Material for Wind Turbines Brake Pads
(The American Society of Mechanical Engineers (ASME), 2023)Copper matrix incorporated with solid lubricant and hard ceramic reinforcement is a proven potential material for wind turbine brake pad applications. Though brake pads as bulk composites possess high wear resistance, hard ...