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Problems in tribology and contact mechanics are becoming increasingly amenable to solution through models and simulation. But in application to the wheel/rail contact, there remain a number of very important features for which either gross simplifications or a lack of understanding or ability severely limits the success of those efforts. Examples include models of friction and material response (including...
The friction properties of nanometer-thick lubricant films are crucial in the reliability and durability of miniaturized moving mechanical components in micro- and nanoelectromechanical systems and hard disk drives. In this work, gas cluster ion beam treatments were applied to prepare smoothed glass sliding pins and diamond-like carbon (DLC) coated sliding pins for pin-on-disk friction tests to study...
The Electric Power Research Institute (EPRI) is evaluating candidate materials for nuclear valve applications utilizing multiple wear tests standards including ASTM G98. The purpose of ASTM G98 is to assess the galling resistance of material couples, and is only intended to provide qualitative observations of the tested materials. In specific cases, such as the testing of stainless steels, this test...
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