Optimizing FDM Parameters for Reliable and Efficient Production of Biomedical PartsPages 247-258
Rakesh Kumar Abstract:
Additive manufacturing is a process of fabricating a 3D Parts in layer fashion using a computer created design. AM is a globally adopted technique, owing to parts part customization, fabricate complex geometrical shapes, create a light weight structures, more flexible, efficient, and sustainable approach to manufacturing compared to traditional methods. Among, the distinct AM process methods, the Fused Deposition Modeling or Fused Filament Fabrication has regularly popular among engineers/researchers/scientist that are working in the medical field (prosthetics, custom surgical models), manufacturing aids (jig, fixtures, tooling) etc. because to its cost effectiveness, wide range of material uses, relatively simple to use and print strong and durable parts then other AM process methods. Total 18 Polylactic Acid (PLA) material samples, 9 for the tensile strength test and 9 for the 3-point bending test were fabricated using an FDM 3D printer using distinct fixed and variable combination of parameters in the current investigation. The universal testing machine (UTM) was used to test the 3D printed samples for tensile and 3-point bending strength. Finally, the Signal-to-Noise ratio (S/N) Analysis of Variance (ANOVA) was used to choose the best possible combinations of the parameters. The findings demonstrated that the greatest tensile strength (21.85 MPa) was achieved at optimal settings when the raster angle was 45°, the printing speed was 50 mm/sec, and the layer height was 0.50 mm. Similarly, the maximum bending strength was achieved at optimal parameters when the raster angle was 90°, the printing speed was 50 mm/sec, and the layer height was 0.15 mm.
Keywords: Additive manufacturing,
Fused process parameters,
Polylactic acid,
Tensile and bending strength
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