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<p>3D printing or additive manufacturing (AM) is a widely used technology for creating three-dimensional objects with accurate digital designs. To achieve this level of quality, the correct choice of printing parameters is essential. This study aimed to investigate the effect of mechanical vibration on the mechanical properties of PLA, printed sample. It investigates the effectiveness of applied vibration in enhancing the forming quality of parts by reducing the inherent porosity associated with fused deposition modeling (FDM) processes. Specifically, the study investigated the effect of applying mechanical vibration using a controlled eccentric motor and power supply at varying speeds to samples during the printing process. The forced vibration is induced by a vibration generator motor, mounted on the printer bed. The mechanical properties of the 3D printed material are assessed at various vibration. Four batches of samples were prepared, with one batch printed without vibration and the other three batches printed with varying levels of vibration. The results showed that the yield strength and ultimate tensile strength were affected by vibration compared to the sample that was not exposed to vibration. The results from testing the surface roughness showed that the surface roughness is improved by increasing the vibration levels applied to the 3D printer. The results also showed a significant increase in bending strength for samples exposed to vibration compared to those not exposed to vibration. As the intensity level of vibration rised, a significant increase in the bending strength was noticed. Additionally, an impact test was performed, and the results were analyzed and discussed.</p>

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Mechanical properties investigations of PLA products made by FDM under controlled vibration

  • 期刊论文

  • 发表日期：

    2025年7月1日

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  • Fouzi Alhadar,
  • Amir Kessentini,
  • Hana Jamhour,
  • Abraheem Hadeeyah,
  • Mondher Wali

摘要

3D printing or additive manufacturing (AM) is a widely used technology for creating three-dimensional objects with accurate digital designs. To achieve this level of quality, the correct choice of printing parameters is essential. This study aimed to investigate the effect of mechanical vibration on the mechanical properties of PLA, printed sample. It investigates the effectiveness of applied vibration in enhancing the forming quality of parts by reducing the inherent porosity associated with fused deposition modeling (FDM) processes. Specifically, the study investigated the effect of applying mechanical vibration using a controlled eccentric motor and power supply at varying speeds to samples during the printing process. The forced vibration is induced by a vibration generator motor, mounted on the printer bed. The mechanical properties of the 3D printed material are assessed at various vibration. Four batches of samples were prepared, with one batch printed without vibration and the other three batches printed with varying levels of vibration. The results showed that the yield strength and ultimate tensile strength were affected by vibration compared to the sample that was not exposed to vibration. The results from testing the surface roughness showed that the surface roughness is improved by increasing the vibration levels applied to the 3D printer. The results also showed a significant increase in bending strength for samples exposed to vibration compared to those not exposed to vibration. As the intensity level of vibration rised, a significant increase in the bending strength was noticed. Additionally, an impact test was performed, and the results were analyzed and discussed.