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Effect of Roughness on Capillary Contact Shapes in Tangential Shear: Experiments

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Abstract

The paper analyzes the effect of roughness on the shape of contacts of a tangentially moving stainless steel indenter and a silicate glass substrate with a liquid drop in between. The analysis, covering two series of experiments with two indenter radii and five degrees of glass roughness (including smooth-glass), provides measurement data on the normal and tangential contact forces, images of the contacts, and time dependences of their area. In each case considered, the contact boundary at the front and back edge behaves differently with the result that the contact during tangential motion loses its symmetry about the indenter center.

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Funding

The work was supported by the German Research Foundation (DFG), project PO 810-55-1, Tomsk State University Competitiveness Improvement Program and Fundamental Research Program of the State Academies of Sciences, by the Government research assignment for ISPMS SB RAS, project FWRW-2021-0006.

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Authors and Affiliations

  1. Technische Universität Berlin, 10623, Berlin, Germany

    I. A. Lyashenko & V. L. Popov

  2. Sumy State University, 40007, Sumy, Ukraine

    I. A. Lyashenko

  3. National Research Tomsk State University, 634050, Tomsk, Russia

    V. L. Popov

  4. Institute of Strength Physics and Materials Science, Siberian Branch, Russian Academy of Sciences, 634055, Tomsk, Russia

    V. L. Popov

Authors
  1. I. A. Lyashenko
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  2. V. L. Popov
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Corresponding author

Correspondence to V. L. Popov.

Additional information

Translated from Fizicheskaya Mezomekhanika, 2021, Vol. 24, No. 5, pp. 67–78.

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Lyashenko, I.A., Popov, V.L. Effect of Roughness on Capillary Contact Shapes in Tangential Shear: Experiments. Phys Mesomech 24, 561–569 (2021). https://doi.org/10.1134/S1029959921050076

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  • DOI: https://doi.org/10.1134/S1029959921050076

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