Including the method of lubricant film thickness measurement with the use of the monochromatic interferometry to the education of tribology

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F16%3APU110435" target="_blank" >RIV/00216305:26210/16:PU110435 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/978-3-319-22762-7_24" target="_blank" >http://dx.doi.org/10.1007/978-3-319-22762-7_24</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/978-3-319-22762-7_24" target="_blank" >10.1007/978-3-319-22762-7_24</a>

Jazyk výsledku

čeština

Název v původním jazyce

Including the method of lubricant film thickness measurement with the use of the monochromatic interferometry to the education of tribology

Popis výsledku v původním jazyce

Measuring of distance as presented at the universities is usually limited to dimension down to microns. This orders of distance are sufficient for common engineers application. However dimension are a lot smaller when engineers deal with the tribology research. One of the most important progresses in the field of tribology in last century is without doubts the elastohydrodynamic lubrication (EHL). This lubrication regime can be found for example in rolling bearings or gears. Common thickness of the lubricant film in the EHD contact is in order of tens or hundreds of nanometers. Optical method which enables measurements of such distances was developed by Gohar and Cameron in 1960s. This method is based on interference of monochromatic light and provides possibility of obtaining lubricant film thickness from known wavelength of used light and its intensity in the lubricated contact. Students can create central film thickness prediction with use of the analytical formulae of the Hamrock and Dowson. This prediction is then confirmed by hands-on experiment in laboratory. Contact simulator with microscope and red light is used to record sequence of the interferograms. These interferograms are then processed in Matlab software in order to obtain film thickness.

Název v anglickém jazyce

Including the method of lubricant film thickness measurement with the use of the monochromatic interferometry to the education of tribology

Popis výsledku anglicky

Measuring of distance as presented at the universities is usually limited to dimension down to microns. This orders of distance are sufficient for common engineers application. However dimension are a lot smaller when engineers deal with the tribology research. One of the most important progresses in the field of tribology in last century is without doubts the elastohydrodynamic lubrication (EHL). This lubrication regime can be found for example in rolling bearings or gears. Common thickness of the lubricant film in the EHD contact is in order of tens or hundreds of nanometers. Optical method which enables measurements of such distances was developed by Gohar and Cameron in 1960s. This method is based on interference of monochromatic light and provides possibility of obtaining lubricant film thickness from known wavelength of used light and its intensity in the lubricated contact. Students can create central film thickness prediction with use of the analytical formulae of the Hamrock and Dowson. This prediction is then confirmed by hands-on experiment in laboratory. Contact simulator with microscope and red light is used to record sequence of the interferograms. These interferograms are then processed in Matlab software in order to obtain film thickness.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20301 - Mechanical engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název statě ve sborníku

55th International conference of Machine design Departments

ISBN

978-80-01-05542-7

ISSN

—

e-ISSN

—

Počet stran výsledku

6

Strana od-do

141-146

Název nakladatele

Neuveden

Místo vydání

neuveden

Místo konání akce

Beroun

Datum konání akce

9. 9. 2014

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000451459600024