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Interaction of asperities on opposing surfaces in thin film, mixed elastohydrodynamic lubrication / Jian W. Choo in Transactions of the ASME . Journal of tribology, Vol. 130 n°2 (Mars/Avril 2008) 

Public ISBD [article]  in Transactions of the ASME . Journal of tribology > Vol. 130 n°2 (Mars/Avril 2008) . - 10 p. Titre : Interaction of asperities on opposing surfaces in thin film, mixed elastohydrodynamic lubrication Type de document : texte imprimé Auteurs : Jian W. Choo, Auteur ; Andrew V. Olver, Auteur ; Hugh A. Spikes, Auteur Année de publication : 2008 Article en page(s) : 10 p. Note générale : Tribology Langues : Anglais (eng) Résumé : A novel experimental method has been developed to investigate how model asperities, on opposing surfaces in an elastohydrodynamic (EHD) contact, interact to influence the lubricant film distribution. This technique allows direct measurements of lubricant film thickness during asperity-asperity collision. A surface having a single transverse ridge asperity was rubbed against a second surface having three different roughness features, a transverse ridge, multiple transverse ridges, and an array of hemispherical bumps to study the resultant micro-EHD films. This work reveals how the film thickness is greatly reduced when the peaks of opposing asperities coincide, and how asperities can combine to cause a larger volume of lubricant to be entrapped at their leading edges. The new technique described shows considerable promise for the study of mixed lubrication. En ligne : http://tribology.asmedigitalcollection.asme.org/article.aspx?articleid=1468016 [article] Interaction of asperities on opposing surfaces in thin film, mixed elastohydrodynamic lubrication [texte imprimé] / Jian W. Choo, Auteur ; Andrew V. Olver, Auteur ; Hugh A. Spikes, Auteur . - 2008 . - 10 p. Tribology Langues : Anglais (eng) in Transactions of the ASME . Journal of tribology > Vol. 130 n°2 (Mars/Avril 2008) . - 10 p. Résumé : A novel experimental method has been developed to investigate how model asperities, on opposing surfaces in an elastohydrodynamic (EHD) contact, interact to influence the lubricant film distribution. This technique allows direct measurements of lubricant film thickness during asperity-asperity collision. A surface having a single transverse ridge asperity was rubbed against a second surface having three different roughness features, a transverse ridge, multiple transverse ridges, and an array of hemispherical bumps to study the resultant micro-EHD films. This work reveals how the film thickness is greatly reduced when the peaks of opposing asperities coincide, and how asperities can combine to cause a larger volume of lubricant to be entrapped at their leading edges. The new technique described shows considerable promise for the study of mixed lubrication. En ligne : http://tribology.asmedigitalcollection.asme.org/article.aspx?articleid=1468016