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<p>This study investigates the tensile behavior of polyethylene terephthalate glycol (PETG) components fabricated using fused filament fabrication (FFF) with a commercially available desktop 3D printer. The reliable use of printed PETG components in engineering applications depends on a thorough understanding of how the printing parameters influence the material properties. Experimental analysis in this study focuses on investigating how variations in filament type and specimen geometry influence the elastic, yield, and post-yield behavior. Tensile tests using ASTM Type I and Type IV dogbone specimens are conducted for three different PETG filaments. The tests show consistent behavior regarding elastic response, maximum stress, and strain at maximum stress, but the post-yield behavior shows drastic differences. Further experiments isolated the effects of specimen width, gauge length, and cooling time between printed layers on the ductility. Additionally, infill orientation was found to influence both strength and ductility. The findings emphasize the relationship between mechanical properties and printing parameters, providing practical advice for the design of PETG components in engineering applications.</p>

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Yield and post-yield tensile behavior of 3D-printed PETG

  • 期刊论文

  • 发表日期：

    2025年12月18日

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  • Miranda Tan,
  • Anthony Sanserverino,
  • Arturo Rodriguez-Herrera,
  • Aditya Kumar,
  • Lauren K. Stewart,
  • Larissa S. Novelino

摘要

This study investigates the tensile behavior of polyethylene terephthalate glycol (PETG) components fabricated using fused filament fabrication (FFF) with a commercially available desktop 3D printer. The reliable use of printed PETG components in engineering applications depends on a thorough understanding of how the printing parameters influence the material properties. Experimental analysis in this study focuses on investigating how variations in filament type and specimen geometry influence the elastic, yield, and post-yield behavior. Tensile tests using ASTM Type I and Type IV dogbone specimens are conducted for three different PETG filaments. The tests show consistent behavior regarding elastic response, maximum stress, and strain at maximum stress, but the post-yield behavior shows drastic differences. Further experiments isolated the effects of specimen width, gauge length, and cooling time between printed layers on the ductility. Additionally, infill orientation was found to influence both strength and ductility. The findings emphasize the relationship between mechanical properties and printing parameters, providing practical advice for the design of PETG components in engineering applications.