THE INFLUENCE OF INFILL DENSITY AND SPEED OF PRINTING ON THE TENSILE PROPERTIES OF THE THREE DIMENSION PRINTING POLYLACTIC ACID PARTS
DOI:
https://doi.org/10.31272/jeasd.27.1.8Keywords:
Three-dimension printing, fused filament fabrication, polylactic acidAbstract
The primary aim of this research was to determine the effect of infill-density (ID), and the speed of print on the microstructure and tensile behavior of 3D printed elements by conducting the tensile test. The tensile behavior of 3D-printed elements is essentially dependent on the ID that is stratified through printing. Here specimens were printed from PLA and divided into three groups the first group printed at speed of 40mm/s and (50,75,100) % infill ratio. And the second group printed at speed of 50 mm/s and (50,75,100) % infill ratio. The third group printed at speed of 60mm/min and (50,75, 100) % infill ratio. The specimens were printed in accordance with ASTM D638 of the tensile test. From all specimens, the best result was obtained in first group specimen 3 at an infill ratio of 100% and speed of print of 40mm/min. from the microstructure examination, the brittle fracture features (smooth region) and ductile fracture characteristics (deformed patterns) were observed in the infill ratio (ID) percentage.
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