Journal of Tribology: Recent submissions
Now showing items 1021-1040 of 7312
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An Optimization Design of Contact Interface Material Stiffness for Improving the Uniformity of the Contact Pressure
(The American Society of Mechanical Engineers (ASME), 2020)Material stiffness, a significant parameter of a contact interface, is investigated to improve the uniformity of the contact pressure. A contact interface material stiffness optimization design algorithm is developed based ... -
Contact Analysis of a Soft-Coated Asperity During Loading–Unloading Process in Consideration of Strain Hardening Effects
(The American Society of Mechanical Engineers (ASME), 2020)In this paper, the flattening process of a coated single asperity by a rigid flat is studied based on a two-dimensional finite element model under different contact interferences. The soft coating and hard substrate materials ... -
Elevated-Temperature Wear Study of HVOF spray Cr3C2–NiCr-Coated Die Steels
(The American Society of Mechanical Engineers (ASME), 2020)Wear and surface damage of tools (die materials) in the hot metal forming industry is a critical problem observed and is producing an adverse effect on the process economy. The problem occurs when tool and workpiece interact ... -
Erratum: “Profile Design for Misaligned Journal Bearings Subjected to Transient Mixed Lubrication” [ASME J. Tribol., 2019, 141(7), p. 071701; DOI: 10.1115/1.4043506]
(The American Society of Mechanical Engineers (ASME), 2020)In the original publication, Fig. 5 is incorrect. The actual applied loads used for all the simulations can be found in the corrected figure below with a peak vertical load of 13.7 kN in magnitude. -
Profile Design for Misaligned Journal Bearings Subjected to Transient Mixed Lubrication
(American Society of Mechanical Engineers (ASME), 2019)Misalignment between the shaft and the bearing of a journal bearing set may be inevitable and can negatively impact journal bearing performance metrics in many industrial applications. This work proposes a convex profile ... -
Optimal Parameters of Grooved Conical Hybrid Journal Bearing With Shear Thinning and Piezo-viscous Lubricant Behavior
(American Society of Mechanical Engineers (ASME), 2019)To harness higher axial load capacity, a larger cone angle is used in conical bearings, resulting in an increase in the surface area which in turn increases the frictional power loss. The use of microgrooves in journal ... -
Three-Dimensional Thermo-Elasto-Hydrodynamic Computational Fluid Dynamics Model of a Tilting Pad Journal Bearing—Part II: Dynamic Response
(American Society of Mechanical Engineers (ASME), 2019)Part II presents a novel approach for predicting dynamic coefficients for a tilting pad journal bearing (TPJB) using computational fluid dynamics (CFD) and finite element method (FEM), including fully coupled elastic ... -
Three-Dimensional Thermo-Elasto-Hydrodynamic Computational Fluid Dynamics Model of a Tilting Pad Journal Bearing—Part I: Static Response
(American Society of Mechanical Engineers (ASME), 2019)This paper presents the first simulation model of a tilting pad journal bearing (TPJB) using three-dimensional (3D) computational fluid dynamics (CFD), including multiphase flow, thermal-fluid, transitional turbulence, and ... -
On the Planarization Mechanism and Pad Aging Effects of Soft Pad Polishing: A Perspective From the Micro-Mechanical Properties of Soft Pads
(American Society of Mechanical Engineers (ASME), 2019)The local viscoelastic properties of soft polishing pads with different usage durations are measured by a micro-scale mechanical analysis testing platform. The testing reveals stimulus-adaptive local viscoelasticity of ... -
Real-Time Measurement of Dynamic Wheel-Rail Contacts Using Ultrasonic Reflectometry
(American Society of Mechanical Engineers (ASME), 2019)The contact condition between the wheel and the rail is paramount to the lifespan, safety, and smooth operation of any rail network. The wheel/rail contact condition has been estimated, calculated, and simulated successfully ... -
Effect of Oil Supply Pressure on the Force Coefficients of a Squeeze Film Damper Sealed With Piston Rings
(American Society of Mechanical Engineers (ASME), 2019)Squeeze film dampers (SFDs) aid to both reduce rotor dynamic displacements and to increase system stability. Dampers sealed with piston rings (PR), common in aircraft engines, are proven to boost damping generation, reduce ... -
Novel One-Component Anisole- and Hydroxyl-Terminated Perfluoropolyethers for Boundary Lubrication
(American Society of Mechanical Engineers (ASME), 2019)The tribological properties of some novel single component perfluoropolyether (PFPE) boundary lubricants with chemically integrated mixture end groups are investigated. Chemically integrated mixture end groups composed of ... -
Experimental Analysis of Chromium Molybdenum Coatings Under Mixed Elastohydrodynamic Lubrication for Film Thickness, Friction, and Wear Characterizations
(American Society of Mechanical Engineers (ASME), 2019)This research aims to evaluate the tribological performance of chromium molybdenum (CrMo) coatings under point and line-contact mixed elastohydrodynamic lubrication. This article studies the coatings made from two different ... -
A Surface Connectivity-Based Approach for Leakage Channel Prediction in Static Sealing Interface
(American Society of Mechanical Engineers (ASME), 2019)Leakage susceptibility is significant for the functionalization of engineering products, and surface topography plays a crucial role in forming the leakage channel in static sealing interface. This paper proposes a surface ... -
Micropitting Fatigue Wear Simulation in Conformal-Contact Under Mixed Elastohydrodynamic Lubrication
(American Society of Mechanical Engineers (ASME), 2019)In this study, a physics-based fatigue wear model is proposed to evaluate the reliability and to predict the life of cumulative micropitting wear for lubricated conformal contacts on rough surfaces. The surface normal load, ... -
Fabrication of Hybrid Surface Composites AA6061/(B4C + MoS2) via Friction Stir Processing
(American Society of Mechanical Engineers (ASME), 2019)Poor tribological properties restrict structural applications of aluminum alloys and surface composites of aluminum alloys have gained more attention in material processing. The addition of solid lubricant reinforcement ... -
Tribological Properties of Multi-Walled Carbon Nanotube-Cr and Graphene Oxide-Cr Composite Coating
(American Society of Mechanical Engineers (ASME), 2019)Chromium (Cr)-based coatings have been widely used to strengthen the friction reduction and wear resistance on various kinds of surface. Here, the stable aqueous dispersion of oxidized multi-walled carbon nanotube (MWCNT) ... -
Wear Behavior of Pure Titanium Coated With WC-Co by the Use of Electrospark Deposition Method
(American Society of Mechanical Engineers (ASME), 2019)Titanium is a highly interesting material in engineering because of its unique combination of high strength to weight ratio, excellent resistance to corrosion, and biocompatibility. However, the material’s low wear resistance, ... -
Friction and Wear Behavior of Environmentally Friendly Ionic Liquids for Sustainability of Biolubricants
(American Society of Mechanical Engineers (ASME), 2019)The sustainability of biolubricants as green alternatives for industrial and machinery lubrication is questionable due to their unreliable oxidative stability, high pour point, and easy accumulation of contaminants that ... -
Tribological Properties of Nanoclay-Infused Banana Fiber Reinforced Epoxy Composites
(American Society of Mechanical Engineers (ASME), 2019)The objective of this work is to study the tribological properties of natural fiber based composites using nanotechnology. The naturally available banana plant fibers were treated with nanoclay particles, and these treated ...