Study on the Infill Pattern and Density Effect on the Tensile Properties of 3D Printed PLA Material
Mia Rismalia (a), Samuel Christian Hidajat (a), I Gede Raditya Permana (a), Budi Hadisujoto (a), Farid Triawan (a*)

a) Faculty of Engineering and Technology, Sampoerna University, Jakarta 12780, Indonesia
*farid.triawan[at]sampoernauniversity.ac.id

Abstract

3D printing is considered as a highly convenient manufacturing process since it enables to create objects of many shapes, sizes and rigidity based on the material properties and the printing parameters. However, the mechanical properties of 3D printed materials is not yet fully understood. There are a lot of different printing parameter combinations which results in different mechanical properties and printing time. This research work aims to investigate the relationship between printing parameters, i.e. infill density and infill pattern, and tensile property of Polylactic Acid (PLA) material. Anycubic i3 Mega 3D printer is used to print the specimens and an open-source slicing software Cura is used to vary the printing parameters. The two varied printing parameters are infill densities of 25%, 50%, 75% and infill patterns namely Grid, Tri-Hexagon, and Concentric. The specimen and tensile testing procedure are based on ASTM D638 Type 1 standard. Three tensile properties, in this case, elastic modulus, yield strength, and tensile strength were examined. The obtained results can be used as a data reference for making finite element model (FEM) as well as predicting the optimum tensile property with respect to the printing parameters.

Keywords: 3D printing; tensile property; printing parameters; infill density; infill pattern

Topic: Mechanical Engineering

Link: https://ifory.id/abstract-plain/HdrM6XE8N3gV

Web Format | Corresponding Author (Samuel Christian Hidajat)