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An adhesion-dominated rolling Friction regime unique to micro-scale ball bearings

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Date
2014
Author
Hanrahan, Brendan M.
Misra, Saswat
Beyaz, Mustafa İlker
Feldman, Jeremy H.
Waits, Christopher M.
Ghodssi, Reza
Metadata
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Abstract
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.
URI
http://hdl.handle.net/20.500.12566/240
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  • Elektrik - Elektronik Mühendisliği Bölümü / Department of Electrical & Electronics Engineering
  • Scopus İndeksli Yayınlar Koleksiyonu
  • WOS İndeksli Yayınlar Koleksiyonu

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