Toward overall indicators for comparing dimensional and geometrical performance of material extrusion printers with adaptive GBTA design

Abstract

Benchmark artifacts provide the industry with an easy and affordable way to evaluate the geometrical and dimensional performance of multiple AM printers. However, this approach generates large data sets that are difficult to analyze in order to rank the printers and provide an overview of their performance. This paper proposes innovative overall indicators that provide a summary of each printer’s performance relative to the others, based on the concepts of trueness and precision defined by ISO 5725-1, and axes homogeneity of behavior, fit has been successfully tested on four Material Extrusion (MEX) printer-material pairs.