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<p>The present study embraces two major objectives of addressing performance assessment of process parameters and mechanical characterization of polylactic acid (PLA) and carbon fiber (CF)-reinforced PLA produced by fused filament fabrication. The mechanical attributes like tensile strength, hardness, and elongation were evaluated, and the influence of parameters, namely layer height (0.15-0.3&#xa0;mm), fill density (40-80%), infill pattern (gyroid, honeycomb, triangle), and printing speed (80-100&#xa0;mm/s), on printed PLA/CF-PLA specimens was investigated. The highest strength, hardness, and elongation yielded as per Taguchi L<sub>9</sub> experimentation for printed PLA specimen were 36.28&#xa0;MPa, 82 Shore D, and 7.94%, respectively. Conversely, CF-PLA disclosed the values of 28.63&#xa0;MPa, 77.67 Shore D, and 9.88%. The optimal printing conditions were established, and the results of confirmation experiment are entwined to the predicted values of analysis of variance and fuzzy logic system. The mechanical characterization of PLA and CF-PLA specimens was bifurcated into four categories: microstructural features, density analysis, temperature gravimetric study, and Fourier transform infrared spectroscopy. The concluding remarks from the findings underletting the importance of PLA and CF-PLA for demanding engineering applications are discoursed.</p>

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Performance Assessment of Process Parameters and Mechanical Characterization of Additively Fabricated PLA and CF-PLA

  • 期刊论文

  • 发表日期：

    2025年11月3日

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  • M. Madhusudan,
  • S. P. Shanmuganatan,
  • K. S. Hindushree,
  • Chahak Jain,
  • Syed Shihabuddin,
  • Prakhar Jain

摘要

The present study embraces two major objectives of addressing performance assessment of process parameters and mechanical characterization of polylactic acid (PLA) and carbon fiber (CF)-reinforced PLA produced by fused filament fabrication. The mechanical attributes like tensile strength, hardness, and elongation were evaluated, and the influence of parameters, namely layer height (0.15-0.3 mm), fill density (40-80%), infill pattern (gyroid, honeycomb, triangle), and printing speed (80-100 mm/s), on printed PLA/CF-PLA specimens was investigated. The highest strength, hardness, and elongation yielded as per Taguchi L9 experimentation for printed PLA specimen were 36.28 MPa, 82 Shore D, and 7.94%, respectively. Conversely, CF-PLA disclosed the values of 28.63 MPa, 77.67 Shore D, and 9.88%. The optimal printing conditions were established, and the results of confirmation experiment are entwined to the predicted values of analysis of variance and fuzzy logic system. The mechanical characterization of PLA and CF-PLA specimens was bifurcated into four categories: microstructural features, density analysis, temperature gravimetric study, and Fourier transform infrared spectroscopy. The concluding remarks from the findings underletting the importance of PLA and CF-PLA for demanding engineering applications are discoursed.