Multi-Response Optimization of Fused Deposition Modelling Process Parameters of ABS Using Response Surface Methodology (RSM)-Based Desirability Analysis

Abstract

The basic efforts of this investigation are focused on the development of an optimal layout plan with minimal build time, model material volume, support volume and thus production cost for a Fortus 250mc modeler. ABS plastic is used as a raw material and cylindrical primitives with pre specified STL dimensions are taken as the component. This study focuses on multi response optimization of layout plan for different FDM parameters as well as spatial orientations. Experiments are conducted using full factorial central composite design. Response surface methodology based desirability analysis was employed for optimization of FDM process parameters namely, contour width, raster width, air gap, raster angle, slice height and orientation based on multiple performance characteristics including build time, model material volume and support material volume. Mathematical models were developed and tested for accuracy using DesignExpert software for RSM application. The results thus obtained are further processed using Desirability approach for multi objective optimization in order to achieve overall layout optimization for quantitative characteristics.