Nano-wear mechanism for ultra-high molecular weight polyethylene (UHMWPE) sliding against a model hard asperity

  • Wong B
  • Sinha S
  • Tan J
 et al. 
  • 19

    Readers

    Mendeley users who have this article in their library.
  • 19

    Citations

    Citations of this article.

Abstract

This paper investigates the mechanism of wear-particle generation when a single asperity is passed over the surface of UHMWPE. A single asperity is modelled using a conical diamond-tip indenter attached to a nano-scratch tester. Scratches are produced by passing the indenter over the surface of the polymer in a single pass and multiple passes on a single track or on orthogonally intersecting tracks. The debris-generation process, as observed in the nano-scratch test, is complex and depends upon the direction of scratches. It is found that the rate of wear-debris generation is much higher when two consecutive scratches orthogonally intersect each other compared to when the scratches are made on the same track. "Wall" formation was observed between orthogonally intersecting scratches, and it is believed that this is central to the low-cycle wear mechanism in these systems. © 2004 Springer Science+Business Media, Inc

Author-supplied keywords

  • Hip/knee prostheses
  • Ultra-high molecular weight polyethylene
  • Wear mechanism
  • Wear-debris generation

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document

Authors

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free