Tribological investigation of porcine articular cartilage

A. C. Rennie, W. G. Sawyer

Research output: Chapter in Book/Report/Conference proceedingConference contribution


This poster examines the tribological properties and effective elastic modulus of porcine articular cartilage plugs. Two methods of obtaining an effective elastic modulus are explored for the different initial material conditions during the indentation loading and unloading. The average values of coefficient of friction varied from 0.04-0.14, but ended with a steady-state average of 0.06. It was validated that increasing pressure during sliding produces an increase in friction coefficient. From a contact model fit to the loading region of the indentation curve, effective elastic modulus had an average value of 300 MPa, which agrees with existing literature. From an examination of the linear portion of the unloading region of the indentation curve, the effective elastic modulus was an average of 8.9 MPa. A preliminary explanation for this is that before loading, a bulk material is present, but pressure effects could evacuate some of the interstitial fluid, leaving in the unloading curve an effective matrix without fluid.

Original languageEnglish (US)
Title of host publicationProceedings of the World Tribology Congress III - 2005
PublisherAmerican Society of Mechanical Engineers
Number of pages2
ISBN (Print)0791842010, 9780791842010
StatePublished - 2005
Externally publishedYes
Event2005 World Tribology Congress III - Washington, D.C., United States
Duration: Sep 12 2005Sep 16 2005

Publication series

NameProceedings of the World Tribology Congress III - 2005


Other2005 World Tribology Congress III
Country/TerritoryUnited States
CityWashington, D.C.

ASJC Scopus subject areas

  • Engineering(all)


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