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03-09-2021 | Research Article-Mechanical Engineering | Issue 12/2021

Arabian Journal for Science and Engineering 12/2021

Impact and Shear Behavior of PLA/12%Cu Reinforced Composite Filament Printed at Different FDM Conditions

Journal:
Arabian Journal for Science and Engineering > Issue 12/2021
Authors:
M. Venkata Pavan, K. Balamurugan, V. Srinivasadesikan, Shyi-Long Lee

Abstract

The advantages of metal powder in the Polylactic Acid (PLA) matrix for strengthening have attracted interest among the researchers. An attempt was made to use the advantages of copper (Cu) as the reinforcing component in the PLA matrix. After a few series of exams, copper with weight percentages of 12 in the PLA matrix was reported to be an appropriate composition. The PLA-Cu composite filament with 12% Cu was successfully manufactured using hot extrusion. 1.75–mm-diameter extracted composite filament was built according to the ASTM standard for shear and impact testing under various Fused Deposition Model (FDM) conditions. The effects of nozzle temperature, bed temperature, and layer height on different printing conditions were examined. The effect of the FDM parameters during impact load conditions was in the order of the nozzle temperature, bed temperature, and layer height. The effect of FDM machining conditions on the shear depends primarily on the thickness of the layer. The shear test is minimally influenced by the extrusion temperature. Analysis of the topography of the fracture surface reveals that a fracture surface is a form of plastic deformation and that the crack initiated from the layer limit. The dislocations of the Cu particles through the slide advances toward the failure. An elevated extrusion temperature reduces ductility. Different surface profile settings are analyzed using 3D optical microscopy.

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