On the use of fractal geometry methods for the wear process characterization

Irregular fluctuations of friction coefficient around the mean value were analysed by means of fractal geometry methods. Particular data were recorded during the steady-state stage of dry sliding tests carried out in Si 3N 4 ball – on – Si 3N 4/SiC nanocomposite disc configuration. It was proven tha...

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Bibliographic Details
Published in:Wear 2005-04, Vol.258 (9), p.1462-1465
Main Authors: Kupková, Miriam, Kupka, Martin, Rudnayová, Emöke, Dusza, Ján
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Fractal analysis
Friction coefficient
Friction, wear, lubrication
Machine components
Mechanical engineering. Machine design
Si 3N 4/SiC nanocomposite
Sliding wear
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Summary:Irregular fluctuations of friction coefficient around the mean value were analysed by means of fractal geometry methods. Particular data were recorded during the steady-state stage of dry sliding tests carried out in Si 3N 4 ball – on – Si 3N 4/SiC nanocomposite disc configuration. It was proven that the set of points {sliding distance (time), friction coefficient}, considered as a geometric object in a two-dimensional space, has the property of a fractal curve. The fractal dimension of this curve increased with increasing wear rate gained in a particular wear test. This could indicate a possible correlation between the wear rate and the fractal dimension of friction coefficient as a function of sliding distance (time).
ISSN:0043-1648
1873-2577
DOI:10.1016/j.wear.2004.09.059