Optimizing the frictional behavior of partially wetting soft contacts as measured with hydrogel covered silicones

Toshiaki Nishi, Takeshi Yamaguchi, Kei Shibata, Kazuo Hokkirigawa

研究成果: Article査読

8 被引用数 (Scopus)

抄録

In general, the friction behavior of soft materials is sensitive to wettability. To examine the effect of a non-uniform distribution of wettability, the friction between a rubber hemisphere partially covered with polyvinyl alcohol hydrogel patch and a glass plate under water-lubricated conditions was investigated. Experimental results revealed that the real contact area and friction coefficient increased and decreased with patch size relative to no hydrogel coating. Considering PVA hydrogel has low friction, it would be reasonable that these parameters decreased with the hydrogel patch size. However, the result exceeds this prediction. This effect occurred because the free energy of the system during contact formation was changed by adding the hydrogel.

本文言語English
論文番号106586
ジャーナルTribology International
153
DOI
出版ステータスPublished - 2021 1月

ASJC Scopus subject areas

  • 材料力学
  • 機械工学
  • 表面および界面
  • 表面、皮膜および薄膜

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