Journal of Tribology: Recent submissions
Now showing items 841-860 of 7312
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Special Issue on Tribology of Additive Manufacturing
(The American Society of Mechanical Engineers (ASME), 2021)Additive manufacturing (AM) enables the rapid fabrication of parts with complex geometries that cannot be easily manufactured with traditional methods. While originally limited to rapid prototyping, recent advances in AM ... -
Behaviors of a Hole-Pattern Seal With Wet-Gas
(The American Society of Mechanical Engineers (ASME), 2021)Hole-pattern (HP) seals are widely used in centrifugal compressors to control leakage. This paper investigates the behaviors of an HP with wet-gas mixtures. The mixture consists of oil and air with inlet liquid volume ... -
Thermal and Tribological Performance of Graphite Flake-Based Magnetorheological Fluid Under Shear Mode Clutch
(The American Society of Mechanical Engineers (ASME), 2021)In this research work, graphite flake has been used as an additive in magnetorheological (MR) fluid to improve its thermal and tribological performance. MR fluids with varying amounts of graphite flakes (0.5, 1, 2, 3, 4, ... -
Lubrication and Fluid Film Study on the Vane Tip in a Vane Pump Hydraulic Transmission Considering a Fluid and Structure Interaction
(The American Society of Mechanical Engineers (ASME), 2021)A mathematical modeling approach to determine fluid film thickness on the vane tip in a vane pump transmission is developed. The transmission is based on a double-acting vane pump with an additional output shaft coupled ... -
Effects of Aging and Deep Cryogenic Treatment on Wear Behavior of Al7075 Alloy
(The American Society of Mechanical Engineers (ASME), 2021)This study investigated the effects of aging and deep cryogenic treatment (DCT) on the hardness and wear behavior of Al7075 alloy. In this context, two different categories were created for the aging process. For the first ... -
High-Temperature Dry Sliding Wear Behavior of Ti–10V–2Fe–3Al
(The American Society of Mechanical Engineers (ASME), 2021)In this study, the microstructure, high-temperature tribological performance, and mechanical properties of solution-aged Ti–10V–2Fe–3Al were investigated. The microstructure of solution-aged Ti–10V–2Fe–3Al reveals a bimodal ... -
Effects of Carriage Flexibility on Friction Force in Linear Ball Guides
(The American Society of Mechanical Engineers (ASME), 2021)This article presents the effects of carriage flexibility on the friction force in linear ball guides, which includes hydrodynamic rolling friction, elastic hysteresis friction, slip friction, and drag friction. To this ... -
Effects of Grain Refinement on Rolling Contact Fatigue in Bearing Contacts
(The American Society of Mechanical Engineers (ASME), 2021)This paper presents a finite element model (FEM) to investigate the effect of prior austenite grain refinement on rolling contact fatigue (RCF). RCF life was determined using continuum damage mechanics (CDM), which simulated ... -
Air Bearings Theory, Design and Applications
(The American Society of Mechanical Engineers (ASME), 2021)It is hard to imagine any machine that could operate over a prolonged length of time without a lubricant. Thus, it is fortuitous that air, with its ubiquitous abundance, can function in this capacity. This is not intuitively ... -
Analysis of Flow Regimes and Associated Sources of Dissipation in Splash Lubricated Planetary Gear Sets
(The American Society of Mechanical Engineers (ASME), 2021)Planetary gears are used in several applications given that they provide high reduction ratio in a compact size. Two kinds of lubrication are used in these applications: injection or splash lubrication. In case of splash ... -
Analysis of Incomplete Film in Parallel Plates Including Inlet Tube and Groove
(The American Society of Mechanical Engineers (ASME), 2021)To clarify the realistic upstream boundary conditions of hydrodynamic bearings, the oil spread in a complex system of parallel plates including an inlet tube and axial groove is studied by the computational fluid dynamics ... -
Novel Thrust Foil Bearing With Pocket Grooves for Enhanced Static Performance
(The American Society of Mechanical Engineers (ASME), 2021)The integration of foil bearing technology into high-speed oil-free machines has been slow in progress, in part, due to the low load-carrying capacity of the foil thrust bearing. It is crucial this issue is addressed through ... -
Mechanical, Tribological, and Corrosion Properties of Composite NiP-Al2O3 With Different Amount of Particles
(The American Society of Mechanical Engineers (ASME), 2021)In this study, the influence of Al2O3 particle amounts on the mechanical, tribological, and corrosion properties of the composite NiP-Al2O3 coating was evaluated. AISI 4140 steel was coated with NiP through an autocatalytic ... -
Effect of Differential Hardness on Static Load Capacity of AISI 52100 Bearing Steel
(The American Society of Mechanical Engineers (ASME), 2021)Static Load Capacity as defined by Palmgren is the load (stress) applied to a bearing that results in an indentation greater than 0.0001 times the diameter of the rolling element. The effect of hardness on the Static Load ... -
Augmentation in Tribological Performance of Polyalphaolefins by COOH-Functionalized Multiwalled Carbon Nanotubes as an Additive in Boundary Lubrication Conditions
(The American Society of Mechanical Engineers (ASME), 2021)This current study emphasized the tribological performances of COOH-functionalized multiwalled carbon nanotubes (MWCNTs) dispersed in two different grades of polyalphaolefins (i.e., PAO 4 and PAO 6). The friction and wear ... -
Investigation of the Optimum Surface Roughness of AISI 5120 Steel by Using a Running-in Attractor
(The American Society of Mechanical Engineers (ASME), 2021)To investigate the influence of surface roughnesses on the dynamic characteristics of AISI 5120 steel in sliding friction process, a suite of running-in experiments are performed on a pin-on-disk tribometer. The running-in ... -
Tribological Properties of Ti-Doped Diamond-Like Carbon Coatings Under Boundary Lubrication With ZDDP
(The American Society of Mechanical Engineers (ASME), 2021)Diamond-like carbon (DLC) coatings containing 0.7%, 5.8%, and 23.3% Ti were deposited via pulsed cathodic arc deposition and magnetron sputtering on AISI 316L stainless steel substrates. The varied Ti content was controlled ... -
Investigation of Different Groove Profile Effects on Torque Transmission in Shear Mode Magnetorheological Clutch: Numerical Simulation and Experimental Study
(The American Society of Mechanical Engineers (ASME), 2020)In this research paper, an attempt has been made to investigate the torque transmission characteristics in a radial magnetorheological (MR) clutch disc with different groove profiles. To estimate the transmitted torque, a ... -
Wear Analysis of Angular Contact Ball Bearing in Multiple-Bearing Spindle System Subjected to Uncertain Initial Angular Misalignment
(The American Society of Mechanical Engineers (ASME), 2021)The effects of the uncertainty of angular misalignment on the wear of angular contact ball bearings in the spindle system are investigated. The wear model of bearing raceways is derived based on the Archard model. The ... -
Classification of Friction and Wear State of Wind Turbine Gearboxes Using Decision Tree and Random Forest Algorithms
(The American Society of Mechanical Engineers (ASME), 2021)Based on oil monitoring technology to collect friction and wear parameters, the failure modes of key friction pairs in wind turbine gearboxes can be evaluated and classified. However, the collected data of failures caused ...