Pfestorf M, Engel U, Geiger M (1998)
Publication Type: Journal article
Publication year: 1998
Publisher: Elsevier BV
Book Volume: 216
Pages Range: 244-250
DOI: 10.1016/S0043-1648(98)00175-6
In metal-forming processes, the load at the interface between workpiece and die is transmitted by three different kinds of bearing ratios. These are the real contact area, which is represented by the solid contact, and the static and dynamic lubricant pockets. As the real contact area is already well known from other researchers, the static and dynamic lubricant pockets are newly defined bearing ratios that characterize the contact mechanisms in mixed lubrication. To determine them with respect to the topography, three-dimensional surface parameters have to be defined. These are the material area ratio, as well as the open and closed void area ratio. As it is shown in the paper, the maximum of the closed void area ratio and the closed void volume seem to be distinctive features for characterizing the tribological properties of the surface, even if there are only slight variations in the surface topography. In order to determine these characteristic parameters, the surface is mapped three-dimensionally by an optical measuring device. Based on the measured surface data, the area ratios can be calculated by the program SAM (surface analysis module) which will also be presented in the paper. © 1998 Elsevier Science S.A. All rights reserved.
APA:
Pfestorf, M., Engel, U., & Geiger, M. (1998). Three Dimensional Characterization of Surfaces for Sheet Metal Forming. Wear, 216, 244-250. https://dx.doi.org/10.1016/S0043-1648(98)00175-6
MLA:
Pfestorf, Markus, Ulf Engel, and Manfred Geiger. "Three Dimensional Characterization of Surfaces for Sheet Metal Forming." Wear 216 (1998): 244-250.
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