In situ observation of microwedge effect on liquid lubrication

Sy Wei Lo, Bo Qi Zhou, Ching Feng Fang, Yu-Shen Lu

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The influence of the minute elastic deformation of tool surface, named the "microwedge," on the asperity crushing in liquid lubrication is investigated experimentally. The microwedge plays a role so dominant that although increasing the average velocity of the lubricant can alleviate the asperity deformation; such efforts will be overwhelmed by the microwedge effect if the relative sliding velocity between tool and workpiece is also enhanced concurrently. For all roughness patterns, the asperities show multidirectional expansions of the contact region; an important feature of the microwedge effect. The microwedge effect also creates distributions of surface separation and hydrodynamic pressure neither expected nor explainable by the other models.

Original languageEnglish
Pages (from-to)690-696
Number of pages7
JournalJournal of Tribology
Volume126
Issue number4
DOIs
Publication statusPublished - 2004 Oct 1

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lubrication
Lubrication
Liquids
Crushing
Elastic deformation
liquids
Lubricants
crushing
Hydrodynamics
Surface roughness
elastic deformation
lubricants
sliding
roughness
hydrodynamics
expansion

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

In situ observation of microwedge effect on liquid lubrication. / Lo, Sy Wei; Zhou, Bo Qi; Fang, Ching Feng; Lu, Yu-Shen.

In: Journal of Tribology, Vol. 126, No. 4, 01.10.2004, p. 690-696.

Research output: Contribution to journalArticle

Lo, Sy Wei ; Zhou, Bo Qi ; Fang, Ching Feng ; Lu, Yu-Shen. / In situ observation of microwedge effect on liquid lubrication. In: Journal of Tribology. 2004 ; Vol. 126, No. 4. pp. 690-696.
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