Micro-contact based modelling of abrasive wear

Masen, M.A. and Rooij de, M.B. and Schipper, D.J. (2005) Micro-contact based modelling of abrasive wear. Wear, 258 (1-4). pp. 339-348. ISSN 0043-1648

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Abstract:	A model that describes the abrasive wear between a hard and rough surface and a softer and smooth surface is developed. The contact between these two solids is modelled based on micro-contacts [M.A. Masen, M.B. de Rooij, Abrasive wear between rough surfaces in deep drawing, in: Proceedings of the 6th Austrib Tribology Conference, Perth, Australia, 2002, pp. 601–608], instead of the more conventional summits-based modelling [J.A. Greenwood, J.J. Wu, Surface roughness and contact: an apology, Meccanica 36 (6) (2001) 617–630; J.A. Greenwood, J.B.P. Williamson, Contact of nominally flat surfaces, Proc. R. Soc. London A 295 (1966) 300–319]. Using 3D surface roughness measurements, the hardness of both surfaces and process parameters as applied load, a collection of micro-contact spots is identified and subsequently the surface to surface approach is calculated. The micro-contact spots act as abrasive entities, resulting in wear of the softer contact partner. On a pin-on-disk tribometer the abrasive action of a single micro-contact, or asperity, at different loads is experimentally investigated. An expression for the severity of wear as a function of the indentation depth is obtained by applying a curve-fit through experimentally obtained data. When the indentation depth of a micro-contact spot into the counter surface, as well as the material properties are known, the wear caused by a single micro-contact is obtained. The macroscopic wear volume is found by summing the volumetric wear of each individual micro-contact.
Item Type:	Article
Copyright:	© 2005 Elsevier
Faculty:	Engineering Technology (CTW)
Research Chair:	Surface Technology and Tribology (STT)
Research Group:	Design, Production and Management (DPM)
Link to this item:	http://purl.utwente.nl/publications/76643
Official URL:	http://dx.doi.org/10.1016/j.wear.2004.09.009
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