Publication result detail

Film thickness mapping in lubricated contacts using fluorescence

NEČAS, D.; ŠPERKA, P.; VRBKA, M.; KŘUPKA, I.; HARTL, M.

Original Title

Film thickness mapping in lubricated contacts using fluorescence

English Title

Film thickness mapping in lubricated contacts using fluorescence

Type

Scopus Article

Original Abstract

The present paper presents experimental method for film thickness mapping inside the contact of two bodies. Despite extensive experimental research in the area of contacts of rigid bodies, little is known about the film formation when at least one of the bodies is compliant. This is due to limitations disabling the usage of conventional methods. In present study, mercury lamp induced fluorescence is developed and applied. Evaluation process is verified by comparing theoretical predictions and experimental data for piezoviscous-elastic contact of ceramic ball and glass disc. Consequently, phenolic sample is used as a representative of compliant material. The contact was lubricated by mineral oil and the experiments were carried out under pure rolling conditions. Film thicknesses in a range from 50 nm to 1.2 um were measured for compliant contact. The measured data are little bit lower compared to theory, indicating that thermal effects may influence the lubricant film.

English abstract

The present paper presents experimental method for film thickness mapping inside the contact of two bodies. Despite extensive experimental research in the area of contacts of rigid bodies, little is known about the film formation when at least one of the bodies is compliant. This is due to limitations disabling the usage of conventional methods. In present study, mercury lamp induced fluorescence is developed and applied. Evaluation process is verified by comparing theoretical predictions and experimental data for piezoviscous-elastic contact of ceramic ball and glass disc. Consequently, phenolic sample is used as a representative of compliant material. The contact was lubricated by mineral oil and the experiments were carried out under pure rolling conditions. Film thicknesses in a range from 50 nm to 1.2 um were measured for compliant contact. The measured data are little bit lower compared to theory, indicating that thermal effects may influence the lubricant film.

Keywords

isoviscous, elastohydrodynamic, film thickness, fluorescence, compliant

Key words in English

isoviscous, elastohydrodynamic, film thickness, fluorescence, compliant

Authors

NEČAS, D.; ŠPERKA, P.; VRBKA, M.; KŘUPKA, I.; HARTL, M.

RIV year

2016

Released

09.12.2015

Location

Praha

ISBN

1803-1269

Periodical

MM Science Journal

Volume

4

Number

4

State

Czech Republic

Pages from

821

Pages to

824

Pages count

4

BibTex

@article{BUT114861,
  author="David {Nečas} and Petr {Šperka} and Martin {Vrbka} and Ivan {Křupka} and Martin {Hartl}",
  title="Film thickness mapping in lubricated contacts using fluorescence",
  journal="MM Science Journal",
  year="2015",
  volume="4",
  number="4",
  pages="821--824",
  doi="10.17973/MMSJ.2015\{_}12\{_}201524",
  issn="1803-1269"
}