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

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 micr...

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Main Authors: Milan Omasta, Jakub Adam, Petr Sperka, Ivan Krupka, Martin Hartl
Format: Article
Language:English
Published: MDPI AG 2018-11-01
Series:Lubricants
Subjects:
Online Access:https://www.mdpi.com/2075-4442/6/4/101
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author Milan Omasta
Jakub Adam
Petr Sperka
Ivan Krupka
Martin Hartl
author_facet Milan Omasta
Jakub Adam
Petr Sperka
Ivan Krupka
Martin Hartl
author_sort Milan Omasta
collection DOAJ
description 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.
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spelling doaj.art-1d06f39ca1ab4ece8448f45e434ca6fc2022-12-22T02:07:36ZengMDPI AGLubricants2075-44422018-11-016410110.3390/lubricants6040101lubricants6040101On the Temperature and Lubricant Film Thickness Distribution in EHL Contacts with Arbitrary EntrainmentMilan Omasta0Jakub Adam1Petr Sperka2Ivan Krupka3Martin Hartl4Faculty of Mechanical Engineering, Brno University of Technology, Technická 2, 61669 Brno, Czech RepublicFaculty of Mechanical Engineering, Brno University of Technology, Technická 2, 61669 Brno, Czech RepublicFaculty of Mechanical Engineering, Brno University of Technology, Technická 2, 61669 Brno, Czech RepublicFaculty of Mechanical Engineering, Brno University of Technology, Technická 2, 61669 Brno, Czech RepublicFaculty of Mechanical Engineering, Brno University of Technology, Technická 2, 61669 Brno, Czech RepublicAn 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.https://www.mdpi.com/2075-4442/6/4/101elastohydrodynamic lubricationvelocity directionthermal effectinfrared microscopyoptical interferometry
spellingShingle Milan Omasta
Jakub Adam
Petr Sperka
Ivan Krupka
Martin Hartl
On the Temperature and Lubricant Film Thickness Distribution in EHL Contacts with Arbitrary Entrainment
Lubricants
elastohydrodynamic lubrication
velocity direction
thermal effect
infrared microscopy
optical interferometry
title On the Temperature and Lubricant Film Thickness Distribution in EHL Contacts with Arbitrary Entrainment
title_full On the Temperature and Lubricant Film Thickness Distribution in EHL Contacts with Arbitrary Entrainment
title_fullStr On the Temperature and Lubricant Film Thickness Distribution in EHL Contacts with Arbitrary Entrainment
title_full_unstemmed On the Temperature and Lubricant Film Thickness Distribution in EHL Contacts with Arbitrary Entrainment
title_short On the Temperature and Lubricant Film Thickness Distribution in EHL Contacts with Arbitrary Entrainment
title_sort on the temperature and lubricant film thickness distribution in ehl contacts with arbitrary entrainment
topic elastohydrodynamic lubrication
velocity direction
thermal effect
infrared microscopy
optical interferometry
url https://www.mdpi.com/2075-4442/6/4/101
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