Morphological - Functional Aspects of Electro-Discharge Machined Surface Textures

Abstract

This study investigates a set of "non-common" surface topography parameters of Electro-Discharge Machined surfaces that give differing aspects of texture related to morphological characterization and possible tribological applications. The parameters considered are the Abbott (bearing) curve parameter at 10 % of the raw unfiltered and the roughness profile height P(tp10%) and R(tp10%), respectively, the also bearing curve oriented R(k) family of parameters (ISO 13565-2:1996), the skewness R(sk) and the kurtosis R(ku) of the profile height distribution, the mean spacing R(sm), and the fractal dimension D. The cot-relation of the aforementioned parameters. with pulse energy is examined to allow appropriate selection of machining conditions for producing functionally desirable Electro-Discharge Machined textures. (C) 2009 Journal of Mechanical Engineering. All rights reserved.