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How to Select 2D and 3D Roughness Parameters at Their Relevant Scales by the Analysis of Covariance
Vallourec, 92100 Boulogne-Billancourt, France
Laboratory of Industrial and Human Automation Control, Mechanical Engineering and Computer Science, UMR 8201, Polytechnic University of Hauts-de-France, 59313 Valenciennes, France
Laboratory Quartz EA 7393, Supméca, 93400 Saint-Ouen-sur-Seine, France
TOTAL Marketing & Services, Centre de Recherche de Solaize, 69360 Solaize, France
Author to whom correspondence should be addressed.
Materials 2020, 13(7), 1526; https://doi.org/10.3390/ma13071526 (registering DOI)
Received: 4 February 2020 / Revised: 10 March 2020 / Accepted: 11 March 2020 / Published: 26 March 2020
In this paper, a multi-scale methodology is proposed to model and characterize the effect of two lubricants on changes in surface morphology during a running-in test. The test concerns two steels samples, mounted on a twin-disc tribometer to test each of lubricants A and B for a period of 42 h. The changes are characterized by the standardized roughness parameters given in ISO 25178. A technique involving replication is used to monitor wear during the test. Using all these replication measurements, a multi-scale methodology is applied. These selected models highlighted the relevant parameters for quantifying wear during lifespan, and also showed that lubricant A was better able to preserve surface integrity during wear than lubricant B.
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