Abstract
With the availability of new and sophisticated surface measurement techniques extremely high resolved topography and structure measurements are possible. But now, one detects that conventional surface parameters are insufficient to provide information about the technical functional ability of the workpiece. In order to find out the appropriate parameters for characterising the functional behaviour, a parameterised mathematical model based on physics of the function of the surface is to be derived. In a second step measurement procedures and evaluation algorithm must be defined in order to characterise the functional ability based on the geometrically measured surface. A concept to characterise the surface with function-oriented parameters has been developed. With this method, it is possible to investigate cause-effect relations and to link geometrical and functional properties of workpieces. Based on this approach two examples, wettability and friction of technical surfaces, are given.
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