Probabilistic Analysis of Wear of Polymer Material used in Medical ImplantsJournal: Mechanics, Materials Science & Engineering Journal (Vol.7, No. 1)
Publication Date: 2016-11-18
Authors : T. Goswami; V. Perel;
Page : 1-1
Keywords : medical implants; wear; probabilistic analysis; reliability;
Probabilistic methods are applied to the study of fatigue wear of sliding surfaces. A variance of time to failure (to occurrence of maximum allowable wear depth) is evaluated as a function of a mean wear rate of normal wear and a size of wear particles. A method of estimating probability of failure-free work during a certain time interval (reliability) is presented. An effect of the bedding-in phase of wear on the reliability is taken into account. Experimental data for Ultra High Molecular Weight Polyethylene (UHMWPE) cups of artificial hip implants is used to make numerical calculations.
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