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RISClosed-Form General Relationship Model for the Interfacial Oxidation of Cylindrically Curved Surfaces
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A closed-form algebraic expression of the general relationship between film thickness and time during thermal oxidation as attained by Deal and Grove for planar surfaces has remained elusive for surfaces with curvature. ...
Modeling Growth and Viscous Flow of Oxide on Cylindrical Silicon Surfaces Including Piezoviscous Inhibition
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A baseline constant-parameters non-dimensional cylindrical oxidation model was first revisited, normalizing oxide thickness to oxidant diffusivity/reaction rate ratio instead of the original cylinder radius, allowing this ...
Unusually Effective Nanofiller a Contradiction of Microfiller Specific Mechanisms of PTFE Composite Wear Resistance?
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Wear rates of polytetrafluoroethylene (PTFE) filled with micrometerand nanometersized particles of copper, silicon nitride, and خ³phase alumina were measured under dry sliding conditions using a pinonplate tribometer. In ...
Experimental Evaluation of a Steady-State Model for the Wear of Particle-Filled Polymer Composite Materials
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A model for the steady-state wear behavior of polymer composite materials, including the effects of preferential load support by and surface accumulation of wear-resistant filler particles, is ...
Load Redistribution on Lead Screw Threads Wearing Under Varying Operating Conditions
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The load applied to a lead screw assembly is distributed amongst the engaged threads of its wearing nut in a manner that can range from highly nonuniform to nearly uniform. Nonuniform load ...
Vapor-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 ...
Simple Thermal Model to Select Electromagnetic Launcher Tribomaterials
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Labscale electromagnetic launcher (EML) tests for the baseline case of an aluminum armature spanning a pair of copper rails reproduced excessive aluminum melt wear depth leading to loss of conductive contact and resultant ...
Analysis of Surface Temperatures Within Heat Flux Bands During Constant Acceleration Including Deceleration to Halt
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In the modeling of a uniformly distributed band heat flux region experiencing constant acceleration from rest over a half-space surface, it is found that the maximum surface temperature at the instantaneous speed and the ...
Equations for Time-Dependent Wear and Induced Concentration Profiles in Particle-Filled Polymer Composites
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A time-dependent description of the sliding wear behavior of hard particle-filled polymer composites is developed. The description is based upon the accumulation of wear-resistant filler particles ...
Simulation of the Time-Dependent Wear and Surface Accumulation Behavior of Particle-Filled Polymer Composites
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A simulation has been developed to model the transient wear of particle-filled polymer composites as a function of sliding distance. All inputs are parameters of physical significance, including ...