An Adhesion-Dominated Rolling Friction Regime Unique to Micro-scale Ball Bearings
| Autor: | Reza Ghodssi, C.M. Waits, Brendan Hanrahan, Mustafa Ilker Beyaz, Sudip Misra, Jeremy Feldman |
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| Přispěvatelé: | Beyaz, Mustafa İlker, 107317 [Beyaz, Mustafa İlker], 24343068300 [Beyaz, Mustafa İlker] |
| Rok vydání: | 2014 |
| Předmět: |
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Materials science Mechanical Engineering Rolling resistance Adhesive wear Silikon Surfaces and Interfaces Surface energy Surfaces Coatings and Films Buhar fazlı yağlama Physics::Fluid Dynamics MEMS Air bearing Vapor- phase lubrication Mechanics of Materials Bilyalı rulmanlar Ball (bearing) Lubrication Raceway Composite material Ball bearings Contact area Yapışkan aşınma Friction torque |
| Zdroj: | Tribology Letters. 56:215-221 |
| ISSN: | 1573-2711 1023-8883 |
| DOI: | 10.1007/s11249-014-0401-5 |
| Popis: | We demonstrate that micro-scale rolling bearings exhibit friction and wear properties markedly different from their macro-scale counterparts. A microfabricated testing platform uses variable rolling element diameters or vapor-phase lubricated interfaces to independently test friction force with varying contact area and surface energy. A linear, consistent, relationship between friction force and contact area is observed among different rolling element diameters. When surface free energy is altered through the introduction of vapor-phase lubrication, an 83 % decrease in friction is observed. When coupled with observed ball material adhered to the raceway, there is strong evidence for adhesion-dominated rolling friction regime at the micro-scale. No sponsor |
| Databáze: | OpenAIRE |
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