Wear due to relative motion between component surfaces is one of the primary modes of failure for many engineered systems. Unfortunately, it is difficult to accurately predict component life due to wear as reported wear rates generally exhibit large scatter. This paper analyzes a reciprocating tribometer in an attempt to understand the instrument-related sources of the scatter in measured wear rates. To accomplish this, an uncertainty analysis is completed for wear-rate testing of a commercially available virgin polytetrafluoroethylene pin on 347 stainless steel counterface. It is found that, for the conditions selected in this study, the variance in the experimental data can be traced primarily to the experimental apparatus and procedure. Namely, the principal uncertainty sources were found to be associated with the sample mass measurement and volume determination.
Wear-Rate Uncertainty Analysis
Contributed by the Tribology Division for publication in the ASME JOURNAL OF TRIBOLOGY. Manuscript received by the Tribology Division September 13, 2003; revised manuscript received March 18, 2004. Review conducted by: Q. Wang (Assoc. Ed.).
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Schmitz , T. L., Action , J. E., Burris , D. L., Ziegert , J. C., and Sawyer, W. G. (November 9, 2004). "Wear-Rate Uncertainty Analysis ." ASME. J. Tribol. October 2004; 126(4): 802–808. https://doi.org/10.1115/1.1792675
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