The Effect of Orientation and Layer Thickness on The Tensile Strength of The 3D Printed Specimens

Osama Abdulhamid Terfas; Abdullah Bin Iltayif; Yasin Elghaber

doi:10.66411/jer.v41i1.146

Authors

Osama Terfas University of Tripoli Author
Abdullah Bin Iltayif University of Tripoli Author
Yasin Elghaber University of Tripoli Author

DOI:

https://doi.org/10.66411/jer.v41i1.146

Keywords:

Additive manufacturing, 3D printing, fused deposition modelling, polylactic acid polymer

Abstract

Additive manufacturing (AM) known as 3D printing has attracted significant interest from manufacturers due to its ability to fabricate complex shapes, reduce time and cost, as well as to improve the mechanical properties. This research aims to investigate the interaction effect of layer thickness and specimen orientations on the material properties of the 3D-PLA (polylactic acid) printed specimens using fused deposition modelling (FDM). Three orientations 0°, 45° and 90°and three thicknesses 0.1, 0.2, and 0.3mm were considered. The specimens were designed using SolidWorks and prepared according to ASTM D638. The results confirmed that the change in the mechanism of fabrication of the 3D printing specimens can improve the mechanical properties of the material, particularly the tensile strength and strain. It was observed that printing orientation of 0° provides maximum tensile strength, while changes in layer thickness have an insignificant effect on it. However, the increase in layer thickness has an important effect on the total strain which increases as the layer thickness increases. These results can assist designers in selecting the proper orientation of printing and appropriate layer thickness to improve mechanical properties.

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