Results 251 to 260 of about 867,348 (311)
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Effect of Tire Wear on Wear Rate
Tire Science and Technology, 1975Abstract A question arises as to whether the wear rate of tires is constant under constant conditions and whether the tread life of tires may therefore be projected by linear extrapolation from low mileage tests. A second question arises as to whether commercially produced tires are uniform enough to serve as monitors of environmental change. A
F. C. Brenner, S. R. Scheiner, A. Kondo
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Prediction of Tire Tread Wear Rate and Tread Wear Rate Differences
Tire Science and Technology, 1979Abstract A method is presented for the analysis of tread wear test data, having the principal aim of predicting the ultimate tread life from results of a test suspended near the halfway mark. This method uses standard regression analysis of a suitable model followed by Bayesian inference to produce subjective probability distributions of ...
E. A. Dudley, R. F. Bauer, P. M. Reilly
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Wear rates of posterior composite resins
The Journal of the American Dental Association, 1986The wear rates of nine posterior composite resins were determined for a period of up to 3 years. The wear rates observed depended on the method used for evaluation. A quantitative method of evaluation showed that the wear rates decreased with time. With the use of the quantitative measurements obtained at the end of 6 months after insertion, it was ...
K F, Leinfelder +2 more
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Tire Science and Technology, 1980
Abstract During the early stages of tire wear, the wear rate determined from groove depth measurements may reflect a dimensional change not associated with rubber loss, that is superimposed on the tread loss. The combined effect can be fit with an exponential decay curve relating groove depth to miles run.
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Abstract During the early stages of tire wear, the wear rate determined from groove depth measurements may reflect a dimensional change not associated with rubber loss, that is superimposed on the tread loss. The combined effect can be fit with an exponential decay curve relating groove depth to miles run.
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Wear testing of hard coatings: More than wear rate?
Surface Engineering, 1998The present paper describes how in depth analysis and modelling of wear data obtained from uni- and bidirectional wear tests were used to determine criteria for the selection of materials for tribological applications. Different wear modes in unidirectional ball on disc tests were linked to a load to roughness dependence between body and counterbody ...
J.-P. Celis +3 more
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Wear rate calculation in the four-ball wear test
Wear, 1989Abstract Experiments were conducted to determine the wear rate of lubricated sliding surfaces using a variation of the standard ASTM D 4172-82 four-ball wear test. The relative displacement between the balls was recorded continuously during these tests using a linear variable differential transducer (LVDT) and a data acquisition system.
Michael S. Wright +2 more
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Wear-rate transitions and their relationship to wear mechanisms
Acta Metallurgica, 1987Abstract This paper is concerned with ways of classifying wear and presenting the information on a wear map. The unlubricated sliding wear of steel is classified into seven elementary mechanisms of material removal. The two principal modes of wear, namely mild and severe wear, provide an alternative but related classification.
S.C. Lim, M.F. Ashby, J.H. Brunton
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Measurement Uncertainties in Wear Rates
Tribology Letters, 2009Measurement uncertainties are vital to discussions of differences in measured values, yet they scarcely accompany discussions of wear and wear rates in the tribology literature. In this methods article, approaches to calculate uncertainties in single-point and steady-state wear rates are presented.
David L. Burris, W. Gregory Sawyer
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Pediatric Aphakic Contact Lens Wear: Rates of Successful Wear
Journal of Pediatric Ophthalmology & Strabismus, 1993ABSTRACT Two hundred thirty-eight consecutive patients with pediatric cataracts were fitted with a variety of aphakic contact lenses after cataract extraction. Thirty-nine patients did not return for follow up. Of the remaining 199 patients, 40 discontinued contact lens wear.
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Wear testing of crosslinked polyethylene: Wear rate variability and microbial contamination
Journal of the Mechanical Behavior of Biomedical Materials, 2014The wear performance of two types of crosslinked polyethylene (Marathon™ and XLK™, DePuy Synthes Inc., Warsaw, IN) was evaluated in a pin-on-disc wear tester, a hip wear simulator, and a knee wear simulator. Sodium azide was used as the microbial inhibitor in the calf serum-based lubricant. In the pin-on-disc wear tester, the Marathon wear rate of 5.33±
J-M, Brandt +6 more
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