Effects of transversely oriented defects and thickener lumps on grease elastohydrodynamic lubrication films

Citation
M. Kaneta et al., Effects of transversely oriented defects and thickener lumps on grease elastohydrodynamic lubrication films, P I MEC E J, 215(J3), 2001, pp. 279-288
Citations number
30
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Mechanical Engineering
Journal title
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY
ISSN journal
1350-6501 → ACNP
Volume
215
Issue
J3
Year of publication
2001
Pages
279 - 288
Database
ISI
SICI code
1350-6501(2001)215:J3<279:EOTODA>2.0.ZU;2-8
Abstract
Using the optical interferometry technique, transient behaviour of grease f ilms at an elastrohydrodynamic lubrication (EHL) point contact caused by a transversely oriented groove and long bump passing through the contact area is directly observed with three different types of diurea grease without a dditives. The effects of the thickener content on the grease film formation are also examined. It has been found that the behaviour of EHL films depen ds strongly on the thickener structure, and the effects of surface defects on EHL films become pronounced as the film thickness decreases. It has also been found that the thickener lumps move through the EHL conjunction while repeating attachment to the surfaces and detachment from them, and the thi ckener lumps deposited on the surfaces affect the film behaviour as a kind of solid bump.