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<p>In this investigation, the taguchi methodology was employed to examine the effects of fused deposition modeling parameters on printed polylactic acid (PLA) material. The fabricated samples were tested for the tensile and flexural strengrh using a universal testing machine. Finally, the signal-to-noise ratio and analysis of variance were applied to choose the best possible combinations of the parameters. The optimal results were obtained at optimal process parameters (angle was 0°, printing speed was 30&#xa0;mm/sec, and layer height was 0.10&#xa0;mm). At these optimal parameters, maximum tensile strength (44.56&#xa0;MPa) and flexural strength (110.25&#xa0;MPa) were achieved. In addition, a differential scanning calorimetry (DSC) test on the highest tensile strength sample was conducted to examine the thermal characteristics of polymer materials. The plot between temperature vs. heat flow shows reactions at a particular temperature. This indicates that a high-strength PLA sample absorbs a significant quantity of energy. In addition, a surface roughness test was also performed using Mitutoyo SJ-301 roughness tester on the lowest and highest tensile strength samples to examine the effect of printing parameters. The average surface roughness of lowest and highest tensile strength samples was 15.24&#xa0;µm and 10.233&#xa0;µm, respectively. Thus, the surface roughness study demonstrates that printing parameters (printing speed, layer height, etc.) play the major role in achieving the desired surface roughness.</p>

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Effects of Raster Angle, Printing Speed, and Layer Height on Mechanical Properties of Fused Deposition Modeling-Printed Polylactic Acid Samples for Biomedical Applications

  • 期刊论文

  • 发表日期：

    2025年8月20日

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  • Rakesh Kumar,
  • Santosh Kumar

摘要

In this investigation, the taguchi methodology was employed to examine the effects of fused deposition modeling parameters on printed polylactic acid (PLA) material. The fabricated samples were tested for the tensile and flexural strengrh using a universal testing machine. Finally, the signal-to-noise ratio and analysis of variance were applied to choose the best possible combinations of the parameters. The optimal results were obtained at optimal process parameters (angle was 0°, printing speed was 30 mm/sec, and layer height was 0.10 mm). At these optimal parameters, maximum tensile strength (44.56 MPa) and flexural strength (110.25 MPa) were achieved. In addition, a differential scanning calorimetry (DSC) test on the highest tensile strength sample was conducted to examine the thermal characteristics of polymer materials. The plot between temperature vs. heat flow shows reactions at a particular temperature. This indicates that a high-strength PLA sample absorbs a significant quantity of energy. In addition, a surface roughness test was also performed using Mitutoyo SJ-301 roughness tester on the lowest and highest tensile strength samples to examine the effect of printing parameters. The average surface roughness of lowest and highest tensile strength samples was 15.24 µm and 10.233 µm, respectively. Thus, the surface roughness study demonstrates that printing parameters (printing speed, layer height, etc.) play the major role in achieving the desired surface roughness.