Fabrication of functionally graded bio materials by Nano Composite Deposition System

Abstract

Functionally Graded Materials (FGMs) provide continuous or stepwise variation in composition and/or structure to satisfy heterogeneous material properties. This research developed a material modeler and a process planner for the fabrication of FGM using a Nano Composite Deposition System (NCDS). An FGM data structure was implemented, which configures to calculate the composition with interrelations among unit cells. Each unit cell consists of triangular or tetrahedron mesh structures and the property of material composition. In the material modeler, to support material modeling without evaluating the global geometry, the composition of each mesh is propagated from a start boundary to an inner space or an end boundary. The composition is calculated with predefined rules of composition propagation and composition profile. In the process planner, to ensure the quality of the fabricated parts under external conditions such as temperature or pressure, two scenarios were suggested. FGM parts were fabricated with nano composite materials. © 2008 Taylor & Francis Group.