Proceedings of the Korean Society of Tribologists and Lubrication Engineers Conference (한국윤활학회:학술대회논문집)

Korean Tribology Society (한국트라이볼로지학회)
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Investigations on Relationship between Fractal Dimension and 3-D Surfaces Topography of C.G. Irons under Dry Sliding

  • Yongzhen, Zhang (Dept. of Materials, Luoyang Institute of Technology) ;
  • Gesen, Sun (Vehicle Department of Luoyang RailwayDevision) ;
  • Lemin, Sun (Dept. of Materials, Luoyang Institute of Technology) ;
  • Weimin, Liu (State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Science) ;
  • Bao, Shangguan (Dept. of Materials, Luoyang Institute of Technology) ;
  • Yue, Chen (Dept. of Materials, Luoyang Institute of Technology)
  • Published : 2002.10.21
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Abstract

Based on 3-D surface morphology measurements of C.G. irons, the fractal analyses were made on relationship between dry sliding surface morphology and the fractal dimension. It is revealed that the values of fractal dimensions ($D_f$) of sliding surfaces are in the range between 1-2, which are closely related to the surface morphologies. With the increase in depths of grooves or pits, the $D_f$ values increase. At the same time, the increases in densities of the grooves also cause the $D_f$ values to increase. At last, relationship among $D_f$ and friction coefficient as well as wear rate is discussed.

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