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On the Relation between Friction Increase and Grease Thickener Entraining on a Border of Mixed EHL Lubrication

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F20%3APU139963" target="_blank" >RIV/00216305:26210/20:PU139963 - isvavai.cz</a>

  • Result on the web

    <a href="https://www.mdpi.com/2075-4442/8/2/12/pdf" target="_blank" >https://www.mdpi.com/2075-4442/8/2/12/pdf</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.3390/lubricants8020012" target="_blank" >10.3390/lubricants8020012</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    On the Relation between Friction Increase and Grease Thickener Entraining on a Border of Mixed EHL Lubrication

  • Original language description

    This paper deals with an experimental study of film thickness and friction of commercial-grade grease and its base oil in a highly loaded contact. In-situ measurements were conducted for two surface textures on a ball-on-disc optical tribometer at the border of mixed lubrication. At high speeds, the film thickness and the friction of grease correspond with the base oil, while, the thickener enters the contact area and locally affects the film thickness and friction at low speeds. It was found out that the thickener starts to enter the contact area approximately at the same speed when the base oil friction increases on Stribeck curve but without direct solid to solid contact. It indicates that both effects can have the same origin. Change of lubricant flow in contact inlet area was discussed as a possible explanation.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    20301 - Mechanical engineering

Result continuities

  • Project

    <a href="/en/project/GA17-23235S" target="_blank" >GA17-23235S: Effect of thermal properties of contacting bodies on lubricant flow in Hertzian non-smooth contacts</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2020

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Lubricants

  • ISSN

    2075-4442

  • e-ISSN

  • Volume of the periodical

    8

  • Issue of the periodical within the volume

    2

  • Country of publishing house

    CH - SWITZERLAND

  • Number of pages

    11

  • Pages from-to

    1-11

  • UT code for WoS article

    000519110900007

  • EID of the result in the Scopus database

    2-s2.0-85080062452