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Wear Induced Changes in Surface Topography During Running-in of Rolling-sliding Contacts by Maruti Sai Dhiraj Sakhamuri; Terry J Harvey; Bernd Vierneusel; Robert J K Wood is a Engineering article available to read on EtoBox.

What is Wear Induced Changes in Surface Topography During Running-in of Rolling-sliding Contacts about?

Running-in occurs in rolling-sliding contacts under mixed-friction conditions and typically involves asperity smoothing through mild wear and plastic deformation. To improve the prediction of service life or friction of rolling-element bearings under mixed-friction conditions, knowledge of surface topography changes during running-in and their dependence on the operating condition is an important prerequisite. Therefore, this study aims to describe the surface mechanisms due to wear, during running-in and their dependence on one of the variables, slip. AISI 52100 steel specimens were tested in a mini traction machine (MTM) instrumented with friction and contact potential measurement in the presence of a PAO base oil, operating in the mixed lubrication regime. A novel method of pre and post-test surface relocation with 3-D optical profilometry and scanning electron microscopy (SEM) was implemented. Rolling-sliding tests were performed to study the effect of slide-roll ratio on the surface topography changes during running-in. Additional tests were conducted to track the changes to surface topography during this period. The results exhibit the rapid nature of running-in and how most

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Author

Maruti Sai Dhiraj Sakhamuri; Terry J Harvey; Bernd Vierneusel; Robert J K Wood

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Engineering (Physical Sciences)