Function maps and the role of surfaces

An integrated way of viewing workpiece function performance is presented. T his is called a function map. Some of its attributes are explained. Using t his function map a classification scheme for functional performance is deve loped. The way in which surfaces relate to function is investigated with re spect to these maps. New boundary conditions are revealed thereby allowing conventional parameters to be used with confidence so avoiding a new parame ter rash. The whole approach is pictorial rather than analytical for clarit y (C) 2001 Elsevier Science Ltd. All rights reserved.