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<p>Fused deposition modeling (FDM) can be used to made carbon fiber (CF) reinforced thermoplastic composites, although performance is often limited by voids and poor interlayer adhesion. In order to minimize voids, improve interlayer adhesion and maximize the tensile strength of carbon fiber-reinforced thermoplastic composites, important FDM printing parameters like layer thickness, infill density and printing speed are optimized using the Taguchi method, a methodical statistical technique. This study compares the mechanical performance of Polyethylene Terephthalate Glycol reinforced—Carbon Fiber (PETG-CF) and Acrylonitrile Butadiene Styrene reinforced-Carbon Fiber (ABS-CF). An L9 orthogonal array was selected to efficiently investigate the parameter space which minimizes the number of experimental trails. The signal-to-noise (S/N) ratio was used to examine the resulting tensile strength data in order to determine the most important parameters and their optimal levels. Scanning electron microscopy (SEM) analysis revealed well defined void distribution, distinct fracture morphology and strong interlayer bonding, thereby substantiating the reliability and accuracy of the mechanical test results. PETG-CF composite exhibited an optimal tensile strength of 29.4&#xa0;MPa under the printing parameters of 0.20&#xa0;mm layer thickness, 45% infill density and 70&#xa0;mm/s printing speed. These findings indicate that PETG-CF exhibits an average tensile strength which is 32.13% higher than ABS-CF, demonstrating its superior load-bearing capacity and reliability under optimized FDM parameters.</p>

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Comparative Study of Process Parameters for Enhancing the Mechanical Properties of Fused Deposition Modeling Printed PETG-CF and ABS-CF Composites

  • 期刊论文

  • 发表日期：

    2026年3月7日

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  • J. Narendran,
  • T. Karthikeyan,
  • P. Kalimuthu,
  • S. Anthoniraj

摘要

Fused deposition modeling (FDM) can be used to made carbon fiber (CF) reinforced thermoplastic composites, although performance is often limited by voids and poor interlayer adhesion. In order to minimize voids, improve interlayer adhesion and maximize the tensile strength of carbon fiber-reinforced thermoplastic composites, important FDM printing parameters like layer thickness, infill density and printing speed are optimized using the Taguchi method, a methodical statistical technique. This study compares the mechanical performance of Polyethylene Terephthalate Glycol reinforced—Carbon Fiber (PETG-CF) and Acrylonitrile Butadiene Styrene reinforced-Carbon Fiber (ABS-CF). An L9 orthogonal array was selected to efficiently investigate the parameter space which minimizes the number of experimental trails. The signal-to-noise (S/N) ratio was used to examine the resulting tensile strength data in order to determine the most important parameters and their optimal levels. Scanning electron microscopy (SEM) analysis revealed well defined void distribution, distinct fracture morphology and strong interlayer bonding, thereby substantiating the reliability and accuracy of the mechanical test results. PETG-CF composite exhibited an optimal tensile strength of 29.4 MPa under the printing parameters of 0.20 mm layer thickness, 45% infill density and 70 mm/s printing speed. These findings indicate that PETG-CF exhibits an average tensile strength which is 32.13% higher than ABS-CF, demonstrating its superior load-bearing capacity and reliability under optimized FDM parameters.