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Tribology Letters
Erschienen in: Tribology Letters 2/2019

01.06.2019 | Original Paper

Experimental Study on the Physics of Thick EHL Film Formation with Grease at Low Speeds

verfasst von: Tsuyoshi Kochi, Masataka Sakai, Takashi Nogi, Daming Dong, Yoshitsugu Kimura

Erschienen in: Tribology Letters | Ausgabe 2/2019

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Abstract

An unexpected behavior of grease in rolling contact has become known among tribologists that it forms thick film at low speeds, but the nature of the film has still been in dispute. The dominance of EHL effects has been demonstrated in the previous works, in which the increase in the generalized viscosity of grease has been reasoned to cause the increase in the film thickness. This paper describes experiments to measure the film thickness with optical interferometry, to observe the flow in and around the contact with microscopy, and to determine the change in the concentration of the thickener by IR spectroscopy. On the basis of these findings, the physics of the thick film formation with grease at low speeds is discussed.
Vorheriger Artikel Adhesive Contact of Model Randomly Rough Rubber Surfaces
Nächster Artikel Self-competing and Coupled Effect of Laser-Engraved Counterface Groove Depth and Density on Wear of Alumina PTFE

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Metadaten
Titel
Experimental Study on the Physics of Thick EHL Film Formation with Grease at Low Speeds
verfasst von
Tsuyoshi Kochi
Masataka Sakai
Takashi Nogi
Daming Dong
Yoshitsugu Kimura
Publikationsdatum
01.06.2019
Verlag
Springer US
Erschienen in
Tribology Letters / Ausgabe 2/2019
Print ISSN: 1023-8883
Elektronische ISSN: 1573-2711
DOI
https://doi.org/10.1007/s11249-019-1166-7

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