Scholarlink

<p>The present work focuses on fabricating various functionally graded composite structures through 3D printing and studying the influence of various 3D printing process parameters, including infill pattern and infill density, on their mechanical performance. Multiple infill patterns, including gyroid, cubic, and octahedral, were designed in three combinations in a graded manner at 100% infill density across the sample thickness in a stacking sequence and were fabricated via FDM technology using graphene-reinforced PETG material. Similarly, samples with three infill densities (60, 80, and 100%) with a gyroid pattern were fabricated. Thereafter, tensile, flexural, compressive, and impact testing were carried out as per ASTM standards prior to SEM analysis to study various fracture modes. FGM samples with infill grading outperformed the S3 (non-FGM gyroid 100% infill) sample by 11, 6, and 11% in tensile, flexural, and compression testing, respectively. However, in case of impact behavior, the gyroid pattern with 100% ID (S3) exhibited better impact energy than functionally graded structures. Comparative SEM analysis revealed peculiar failure modes, interlayer bonding, and porosity in various samples, leading to the observed behavior. The study revealed the role of functional grading as a key strategy for improving the mechanical behavior of 3D-printed parts.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Mechanical Performance of Functionally Graded Graphene-Reinforced PETG 3D-Printed Composites

  • 期刊论文

  • 发表日期：

    2026年5月23日

查看全文
  • Sheikh Aadil Hussain,
  • M. S. Charoo,
  • Mir Irfan Ul Haq

摘要

The present work focuses on fabricating various functionally graded composite structures through 3D printing and studying the influence of various 3D printing process parameters, including infill pattern and infill density, on their mechanical performance. Multiple infill patterns, including gyroid, cubic, and octahedral, were designed in three combinations in a graded manner at 100% infill density across the sample thickness in a stacking sequence and were fabricated via FDM technology using graphene-reinforced PETG material. Similarly, samples with three infill densities (60, 80, and 100%) with a gyroid pattern were fabricated. Thereafter, tensile, flexural, compressive, and impact testing were carried out as per ASTM standards prior to SEM analysis to study various fracture modes. FGM samples with infill grading outperformed the S3 (non-FGM gyroid 100% infill) sample by 11, 6, and 11% in tensile, flexural, and compression testing, respectively. However, in case of impact behavior, the gyroid pattern with 100% ID (S3) exhibited better impact energy than functionally graded structures. Comparative SEM analysis revealed peculiar failure modes, interlayer bonding, and porosity in various samples, leading to the observed behavior. The study revealed the role of functional grading as a key strategy for improving the mechanical behavior of 3D-printed parts.