Abstract
This research work highlights the influence of fused deposition modeling (FDM) process parameters on the selected mechanical properties such as young’s modulus and surface roughness of FDM prints have been studied by using Taguchi designed L9 orthogonal array (OA) design of experiments (DOEs). Polylactic acid (PLA) feedstock filament has been used for the fabrication of specimens (as per ASTM D638 standard). The critical input parameters selected were namely layer thickness, raster angle and infill pattern. The strength at peak varies in the range of 26 to 38.91 (MPa), whereas strength at break lies in the range of 23.4 to 35.02 (MPa). Elongation at peak lies in the range of 5%-6%. Surface roughness along X axis lies in the range of 3.18 µm to 9.21 µm, whereas along Y axis, it remains in the range of 3.133 µm to 9.512 µm. The average value lies in the range of 4.44 µm to 7.18 µm. The results show that the specimen prepared with the combination of layer thickness 0.16 mm, raster angle 60° and cubic infill pattern has very good mechanical properties.
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