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<p>Additive manufacturing offers a substantial reduction in lead times by enabling rapid design iterations, thereby accelerating the product development cycle. This method has been widely adopted across various sectors, including education, automotive, medical, aerospace, consumer electronics, and fashion. While this technology supports the recycling of PLA, reducing plastic waste, it faces challenges related to filament material failure and poor surface quality due to suboptimal process parameters. This study addresses these issues by focusing on the optimization of key process parameters—specifically, infill density, nozzle temperature, and print orientation—to enhance the mechanical properties of PLA. The Taguchi orthogonal array (L9) was utilized to design the experiments, with all samples produced in compliance with ASTM standards. The mechanical properties, including tensile strength, compression strength, and impact strength, were evaluated. Based on the results, the study identifies the optimal settings for infill density, nozzle temperature, and print orientation to achieve high-quality 3D printed PLA parts. In this study analyzes the surface quality and mechanical properties of PLA parts fabricated through FDM by using SEM techniques to evaluate 3D printing parameters. Tensile and compressive tests were conducted to examine the fracture behavior of components under different load conditions. Additionally, surface SEM images of the PLA parts were obtained to provide further insights.</p>

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Assessing surface quality with SEM analysis and evaluating the parameters and mechanical properties of PLA parts produced by 3D printing

  • 期刊论文

  • 发表日期：

    2025年1月4日

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  • R. Rajiev,
  • S. Saravanan,
  • R. Rajkumar

摘要

Additive manufacturing offers a substantial reduction in lead times by enabling rapid design iterations, thereby accelerating the product development cycle. This method has been widely adopted across various sectors, including education, automotive, medical, aerospace, consumer electronics, and fashion. While this technology supports the recycling of PLA, reducing plastic waste, it faces challenges related to filament material failure and poor surface quality due to suboptimal process parameters. This study addresses these issues by focusing on the optimization of key process parameters—specifically, infill density, nozzle temperature, and print orientation—to enhance the mechanical properties of PLA. The Taguchi orthogonal array (L9) was utilized to design the experiments, with all samples produced in compliance with ASTM standards. The mechanical properties, including tensile strength, compression strength, and impact strength, were evaluated. Based on the results, the study identifies the optimal settings for infill density, nozzle temperature, and print orientation to achieve high-quality 3D printed PLA parts. In this study analyzes the surface quality and mechanical properties of PLA parts fabricated through FDM by using SEM techniques to evaluate 3D printing parameters. Tensile and compressive tests were conducted to examine the fracture behavior of components under different load conditions. Additionally, surface SEM images of the PLA parts were obtained to provide further insights.