Scholarlink

<p>Fused Filament Fabrication is a widely used technology in additive manufacturing, frequently employed to manufacture polymer components. The weak interlayer adhesion strength (IAS) of printed parts negatively affects their mechanical properties. This issue can be addressed by optimizing the printing process parameters and implementing effective post-processing techniques. This study examines the impact of the raster angle, temperature, and force applied during the hot-pressing process on the mechanical properties of 3D-printed polylactic acid components. The design of the experiment used the Response Surface Methodology. The alterations in mechanical properties were assessed following the stated factors. Experimental analysis revealed that the optimal raster angle for the 3D-printed specimens corresponds to the direction of the applied load, as determined through mechanical testing. Optimization suggested 70&#xa0;°C and 25 N at 90° raster orientation as the best condition for maximizing tensile strength (32.98&#xa0;MPa) and IAS. However, statistical analysis revealed that force had a negligible influence (&lt; 1%), and its selection in the optimization reflects a marginal rather than significant effect. The highest possible tensile strength and IAS can be achieved at this point. The maximum tensile strength recorded was 32.98&#xa0;MPa, representing a 22% increase compared to the sample without post-processing. An experimental study indicated that the raster angle was the primary element affecting mechanical performance, accounting for over 90% of tensile strength and interlayer adhesion. Orienting rasters parallel to the load direction resulted in maximal strength. In the hot-pressing process, temperature significantly influences bonding, enhancing it at 70 °C but diminishing performance at elevated temperatures due to thermal degradation. The force exerted had a negligible impact on the mechanical characteristics.</p> Graphical abstract <p></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

Influence of Raster Angle and Post-Processing Via Hot Pressing on the Mechanical Performance of Fused Filament Fabricated Polylactic Acid (PLA) Components

  • 期刊论文

  • 发表日期：

    2025年12月12日

查看全文
  • Ali Jadali,
  • Vahid Abedini,
  • Abdolvahed Kami

摘要

Fused Filament Fabrication is a widely used technology in additive manufacturing, frequently employed to manufacture polymer components. The weak interlayer adhesion strength (IAS) of printed parts negatively affects their mechanical properties. This issue can be addressed by optimizing the printing process parameters and implementing effective post-processing techniques. This study examines the impact of the raster angle, temperature, and force applied during the hot-pressing process on the mechanical properties of 3D-printed polylactic acid components. The design of the experiment used the Response Surface Methodology. The alterations in mechanical properties were assessed following the stated factors. Experimental analysis revealed that the optimal raster angle for the 3D-printed specimens corresponds to the direction of the applied load, as determined through mechanical testing. Optimization suggested 70 °C and 25 N at 90° raster orientation as the best condition for maximizing tensile strength (32.98 MPa) and IAS. However, statistical analysis revealed that force had a negligible influence (< 1%), and its selection in the optimization reflects a marginal rather than significant effect. The highest possible tensile strength and IAS can be achieved at this point. The maximum tensile strength recorded was 32.98 MPa, representing a 22% increase compared to the sample without post-processing. An experimental study indicated that the raster angle was the primary element affecting mechanical performance, accounting for over 90% of tensile strength and interlayer adhesion. Orienting rasters parallel to the load direction resulted in maximal strength. In the hot-pressing process, temperature significantly influences bonding, enhancing it at 70 °C but diminishing performance at elevated temperatures due to thermal degradation. The force exerted had a negligible impact on the mechanical characteristics.

Graphical abstract