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RISVapor-Phase Lubrication in Combined Rolling and Sliding Contacts: Modeling and Experimentation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The in situ vapor-phase lubrication of M50 steel, in combined rolling and sliding contacts at 540°C using nitrogen atmospheres containing acetylene, is achieved. Acetylene partial pressures ...
Lubrication With Granular Flow: Continuum Theory, Particle Simulations, Comparison With Experiment
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Studies of particle flows have followed three parallel paths: (1) experiment, (2) analysis based on the assumption of a continuum, and (3) direct particle simulation. In this paper, we perform ...
A Biphasic Model for Micro-Indentation of a Hydrogel-Based Contact Lens
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The stiffness and hydraulic permeability of soft contact lenses may influence its clinical performance, e.g., on-eye movement, fitting, and wettability, and may be related to the occurrence of ...
Comparison Between Elastic Foundation and Contact Force Models in Wear Analysis of Planar Multibody System
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this paper, two procedures to analyze planar multibody systems experiencing wear at a revolute joint are compared. In both procedures, the revolute joint of interest includes a clearance ...
Material Property Identification and Sensitivity Analysis Using Micro-Indentation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Mechanical properties of materials in small-scale applications, such as thin coatings, are often different from those of bulk materials due to the difference in the manufacturing process. Indentation ...
Temperature and Water Vapor Pressure Effects on the Friction Coefficient of Hydrogenated Diamondlike Carbon Films
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Microtribological measurements of a hydrogenated diamondlike carbon film in controlled gaseous environments show that water vapor plays a significant role in the friction coefficient. These experiments ...
Evaluation of a Model for the Evolution of Wear in a Scotch-Yoke Mechanism
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A nearly ideal two-dimensional scotch yoke mechanism was constructed to test a model of wear depth as a function cycle number. Model variables include the reciprocating mass, a two dimensional ...
Wear-Rate Uncertainty Analysis
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Wear due to relative motion between component surfaces is one of the primary modes of failure for many engineered systems. Unfortunately, it is difficult to accurately predict component life ...
The Difficulty of Measuring Low Friction: Uncertainty Analysis for Friction Coefficient Measurements
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The experimental evaluation of friction coefficient is a common laboratory procedure; however, the corresponding measurement uncertainty is not widely discussed. This manuscript examines the ...
Predicting Knee Replacement Damage in a Simulator Machine Using a Computational Model With a Consistent Wear Factor
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Wear of ultrahigh molecular weight polyethylene remains a primary factor limiting the longevity of total knee replacements (TKRs). However, wear testing on a simulator machine is time consuming ...