Technical-Economical Study on the Optimization of FDM Parameters for the Manufacture of PETG and ASA Parts.

The article presents the results of the technical-economical study regarding the optimization of fused deposition modeling (FDM) parameters (the height of the layer deposited in one pass-L h and the filling percentage-I d ) for the manufacture of Polyethylene Terephthalate Glycol (PETG) and Acrylonitrile Styrene Acrylate (ASA) parts. To carry out this technical-economical study, was used the fundamental principle of value analysis, which consists of maximizing the ratio between V i and C p , where V i represents the mechanical characteristic, and C p represents the production cost. The results of the study show that for tensile specimens made of PETG, the parameter that significantly influences the results of the V i / C p ratios is the height of the layer deposited in one pass, (L h ), and in the case of the compression specimens made of PETG, the parameter that significantly influences the results of the V i / C p ratios is filling percentage (I d ). In the case of specimens manufactured via FDM from ASA, the parameter that decisively influences the results of the V i / C p ratios of the tensile and compression specimens is the filling percentage (I d ). By performing optimization of the process parameters with multiple responses, we identified the optimal parameters for FDM manufacturing of parts from PETG and ASA: the height of the layer deposited in one pass, L h = 0.20 mm, and the filling percentage, I d = 100%.