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On the Temperature and Lubricant Film Thickness Distribution in EHL Contacts with Arbitrary Entrainment

Faculty of Mechanical Engineering, Brno University of Technology, Technická 2, 61669 Brno, Czech Republic
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Lubricants 2018, 6(4), 101; https://doi.org/10.3390/lubricants6040101
Received: 1 October 2018 / Revised: 7 November 2018 / Accepted: 12 November 2018 / Published: 15 November 2018
(This article belongs to the Special Issue Fluid-Film Lubrication)
An understanding of mechanisms which are responsible for elastohydrodynamic lubricant film formation under high sliding conditions is necessary to increase durability of machine parts. This work combines thin-film colorimetric interferometry for lubricant film thickness measurement and infrared microscopy for in-depth temperature mapping through the contact. The results describe the effect of operating conditions such as speed, slide-to-roll ratio, ambient temperature, and sliding direction on lubricant film thickness and temperature distribution. Film thickness data shows how much the film shape is sensitive to operating conditions when thermal effects are significant, while the temperature profiles provides an explanation of this behavior. View Full-Text
Keywords: elastohydrodynamic lubrication; velocity direction; thermal effect; infrared microscopy; optical interferometry elastohydrodynamic lubrication; velocity direction; thermal effect; infrared microscopy; optical interferometry
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Omasta, M.; Adam, J.; Sperka, P.; Krupka, I.; Hartl, M. On the Temperature and Lubricant Film Thickness Distribution in EHL Contacts with Arbitrary Entrainment. Lubricants 2018, 6, 101.

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