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Experimental study of lubricant film thickness behavior in the vicinity of real asperities passing through lubricated contact

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F04%3APU48226" target="_blank" >RIV/00216305:26210/04:PU48226 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Experimental study of lubricant film thickness behavior in the vicinity of real asperities passing through lubricated contact

  • Original language description

    This paper presents an experimental study of the influence of real surface micro-geometry on the film thickness in a circular elastohydrodynamic (EHD) contact formed between a real, random, rough surface of steel ball and smooth glass disc. The Phase Shifting Interferometry has been used to measure in-situ initial undeformed rough surface profiles whereas Thin Film Colorimetric Interferometry has provided accurate information about micro-EHD film thickness behavior over a wide range of rolling speed. Twwo real roughness features were studied in detail ? 56 nm high ridge and 90 nm deep groove, both transversely oriented to the direction of surface motion. It has been shown that ridge is heavily deformed in a loaded contact and its height increases withincreasing rolling speed. The asperity tip film thickness behavior is quite similar to the contact average film thickness when the film thickness is higher than the undeformed ridge height. However below this limit the film is thicker than

  • Czech name

    Experimentální studium tloušťky mazacího filmu v okolí reálných nerovností procházejících kontaktem

  • Czech description

    V článku jsou uvedeny výsledky výzkumu tenkých mazacích filmů v okolí povrchových nerovností. Při studiu tenkých mazacích filmů byly užity dvě měřicí metody - kolorimetrická interferometrie a interferometrie s řízenou změnou fáze. To umožnilo stanovit topografii nedeformovaného třecího povrchu a následně pozorovat její změnu v mazaném kontaktu v závislosti na provozních podmínkách. Pro podrobné studium byly vybrány dvě nerovnosti, příčná rýha o hloubce 90 nm a příčný práh o výšce 56 nm.

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    JR - Other machinery industry

  • OECD FORD branch

Result continuities

  • Project

    Result was created during the realization of more than one project. More information in the Projects tab.

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2004

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    Tribology Transactions

  • ISSN

    0569-8197

  • e-ISSN

  • Volume of the periodical

    47

  • Issue of the periodical within the volume

    3

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    10

  • Pages from-to

    376-385

  • UT code for WoS article

  • EID of the result in the Scopus database