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<p>This study investigates the mechanical properties of PLA/Wood composites fabricated using the Fused Deposition Modeling (FDM) technique. Experimental work is conducted to analyze the influence of key FDM process parameters layer thickness, printing speed, raster angle, and infill density on the mechanical performance of the printed parts. The PLA/Wood composites exhibited tensile strengths ranging from 24.35 to 34.35 N/mm<sup>2</sup><b>,</b> flexural strengths between 20.12 and 25.89 N/mm<sup><b>2</b></sup>, and impact strengths between 0.37 and 0.72&#xa0;kJ/m<sup>2</sup><b>.</b> Common fracture features observed in the composites included cavities, hillocks, smearing, ridges, voids, interface, layer bonding, pores, clusters, cracks, delamination, and pullout<b>.</b> To understand the effects of process parameters, mathematical models are developed, and their accuracy is verified using Analysis of Variance (ANOVA). Additionally, Scanning Electron Microscopy (SEM) was employed to examine the microstructural characteristics of fractured specimens. The natural appearance and tactile texture of wood-filled PLA make it highly suitable for 3D printing of architectural scale models, furniture prototypes, decorative panels, and indoor structural elements. PLA/wood composites are commonly used to manufacture customized consumer goods such as phone cases, keychains, home decor items, artistic sculptures, and jewelry.</p>

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Analysis on Mechanical Properties and Characterization of Polylactic Acid/Wood Infill Composites Manufactured by Fused Deposition Modeling

  • 期刊论文

  • 发表日期：

    2025年9月15日

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  • Ashok Kumar Palaniappan,
  • Ravi Kumar Krishnan,
  • Karthick Uthappan,
  • T. Ramesh

摘要

This study investigates the mechanical properties of PLA/Wood composites fabricated using the Fused Deposition Modeling (FDM) technique. Experimental work is conducted to analyze the influence of key FDM process parameters layer thickness, printing speed, raster angle, and infill density on the mechanical performance of the printed parts. The PLA/Wood composites exhibited tensile strengths ranging from 24.35 to 34.35 N/mm2, flexural strengths between 20.12 and 25.89 N/mm2, and impact strengths between 0.37 and 0.72 kJ/m2. Common fracture features observed in the composites included cavities, hillocks, smearing, ridges, voids, interface, layer bonding, pores, clusters, cracks, delamination, and pullout. To understand the effects of process parameters, mathematical models are developed, and their accuracy is verified using Analysis of Variance (ANOVA). Additionally, Scanning Electron Microscopy (SEM) was employed to examine the microstructural characteristics of fractured specimens. The natural appearance and tactile texture of wood-filled PLA make it highly suitable for 3D printing of architectural scale models, furniture prototypes, decorative panels, and indoor structural elements. PLA/wood composites are commonly used to manufacture customized consumer goods such as phone cases, keychains, home decor items, artistic sculptures, and jewelry.