Publication detail

Investigation of the tribological performance of ionic liquids in non-conformal EHL contacts under electric field activation

MICHALEC, M. SVOBODA, P. KŘUPKA, I. HARTL, M. VENCL, A.

English title

Investigation of the tribological performance of ionic liquids in non-conformal EHL contacts under electric field activation

Type

journal article in Web of Science

Language

en

Original abstract

Real-time external alteration of the internal properties of lubricants is highly desirable in all mechanical systems. However, fabricating a suitable and effective smart lubricant is a long-lasting experimental process. In this study, the film thickness and frictional response of ionic liquid-lubricated non-conformal contacts to an electric field excitation under elastohydrodynamic conditions were examined. Film thickness was evaluated using a "ball-on-disc" optical tribometer with an electric circuit. Friction tests were carried on a mini traction machine (MTM) tribometer with a "ball-on-disc" rotation module and an electric circuit for contact area excitation. The results demonstrate that there is a difference in the behaviour of the ionic liquid during electric field excitation at the evaluated film thicknesses. The results of evaluated film thicknesses demonstrate that there is a difference in the behaviour of the ionic liquid during electric field excitation. Therefore, the ionic liquids could be a new basis for the smart lubrication of mechanical components. Moreover, the proposed experimental approach can be used to identify electrosensitive fluids.

English abstract

Real-time external alteration of the internal properties of lubricants is highly desirable in all mechanical systems. However, fabricating a suitable and effective smart lubricant is a long-lasting experimental process. In this study, the film thickness and frictional response of ionic liquid-lubricated non-conformal contacts to an electric field excitation under elastohydrodynamic conditions were examined. Film thickness was evaluated using a "ball-on-disc" optical tribometer with an electric circuit. Friction tests were carried on a mini traction machine (MTM) tribometer with a "ball-on-disc" rotation module and an electric circuit for contact area excitation. The results demonstrate that there is a difference in the behaviour of the ionic liquid during electric field excitation at the evaluated film thicknesses. The results of evaluated film thicknesses demonstrate that there is a difference in the behaviour of the ionic liquid during electric field excitation. Therefore, the ionic liquids could be a new basis for the smart lubrication of mechanical components. Moreover, the proposed experimental approach can be used to identify electrosensitive fluids.

Keywords in English

friction; thin film lubrication; electro-rheological fluid; smart fluid; lubrication

Released

26.02.2020

Publisher

Springer Nature

Location

LONDON

ISSN

2223-7690

Volume

8

Number

5

Pages from–to

982–994

Pages count

13

BIBTEX


@article{BUT163279,
  author="Michal {Michalec} and Petr {Svoboda} and Ivan {Křupka} and Martin {Hartl} and Aleksandar {Vencl},
  title="Investigation of the tribological performance of ionic liquids in non-conformal EHL contacts under electric field activation",
  year="2020",
  volume="8",
  number="5",
  month="February",
  pages="982--994",
  publisher="Springer Nature",
  address="LONDON",
  issn="2223-7690"
}