Publication result detail

Replenishment Differences in EHL Contact Lubricated by New andIn-bearings-aged Grease

NAVRÁTIL, M.; KOŠŤÁL, D.; KŘUPKA, I.; HARTL, M.

Original Title

Replenishment Differences in EHL Contact Lubricated by New andIn-bearings-aged Grease

English Title

Replenishment Differences in EHL Contact Lubricated by New andIn-bearings-aged Grease

Type

Scopus Article

Original Abstract

Contact replenishment differences between new and aged grease are studied using ball-on-disc optical fluorescence. Threedifferent greases were aged in rolling bearings for 30 –50 % of their predicted life. A considerable effort is focused on fluorescence calibration, so that differences in lubricant volume can be quantified. No changes in replenishment between new and aged samples were found in one grease. The other two greaseswere contaminated by metal particles and iron oxide powder. Grease fluorescence was quenched by contaminants and linear relation between intensity values and film thickness did not apply for samples with heaviest contamination. Nevertheless, strong link between the degree of contamination and lubricant replenishment was found.

English abstract

Contact replenishment differences between new and aged grease are studied using ball-on-disc optical fluorescence. Threedifferent greases were aged in rolling bearings for 30 –50 % of their predicted life. A considerable effort is focused on fluorescence calibration, so that differences in lubricant volume can be quantified. No changes in replenishment between new and aged samples were found in one grease. The other two greaseswere contaminated by metal particles and iron oxide powder. Grease fluorescence was quenched by contaminants and linear relation between intensity values and film thickness did not apply for samples with heaviest contamination. Nevertheless, strong link between the degree of contamination and lubricant replenishment was found.

Keywords

Grease lubrication; Replenishment; Contamination; Fluorescence

Key words in English

Grease lubrication; Replenishment; Contamination; Fluorescence

Authors

NAVRÁTIL, M.; KOŠŤÁL, D.; KŘUPKA, I.; HARTL, M.

RIV year

2021

Released

17.03.2020

Publisher

Faculty of Engineering, University of Kragujevac

ISBN

0354-8996

Periodical

Tribology in Industry

Volume

42

Number

1

State

Republic of Serbia

Pages from

102

Pages to

114

Pages count

14

URL

http://www.tribology.rs/journals/2020/2020-1/2020-1-10.html

Full text in the Digital Library

http://hdl.handle.net/11012/193412

BibTex

@article{BUT162599,
  author="Marek {Navrátil} and David {Košťál} and Ivan {Křupka} and Martin {Hartl}",
  title="Replenishment Differences in EHL Contact Lubricated by New andIn-bearings-aged Grease",
  journal="Tribology in Industry",
  year="2020",
  volume="42",
  number="1",
  pages="102--114",
  doi="10.24874/ti.2020.42.01.10",
  issn="0354-8996",
  url="http://www.tribology.rs/journals/2020/2020-1/2020-1-10.html"
}

Documents

10