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All Journal Rekayasa Mesin Jurnal Polimesin
Rico Handoko
Universitas Surabaya
Automotive Engineering Control & Systems Engineering Engineering Materials Science & Nanotechnology Mechanical Engineering

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IDENTIFIKASI JENIS INFILL PATTERN PADA PROSES 3D PRINTING YANG MENGHASILKAN HASIL CETAK DENGAN KEKUATAN TEKAN DAN PANJANG FILAMEN YANG OPTIMAL Samuel Eluzai Yedija Wijayanto; Rico Handoko; Jesslyne Chenia Noel; Timotius William Anggawirawan; The Jaya Suteja
Jurnal Rekayasa Mesin Vol. 13 No. 2 (2022)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v13i2.1097

Abstract

3D Printing technology becomes a potential solution to build various customized leg prosthetics. As a leg prosthetic must be able to hold a compressive force, it is important to find the compressive strength of the 3D printed part. The aim of this research is to find the infill pattern type which produces the 3D printed part with the highest compressive strength and the shortest filament length. This research uses the Fused Filament Fabrication method to print 24 parts made of Polylactic Acid using 12 different infill patterns with 50% density. All printed parts are designed to replicate the ASTM D695 specimen. After that, the compressive strength of each part is measured by using a Universal Testing Machine. And the filament length of each part is estimated by using slicer software. Based on the experiment result, the infill pattern with the highest compressive strength is the 3D Honeycomb type. However, this infill pattern requires the longest filament length compared to other infill patterns. In order to achieve a similar value of compressive strength with the minimum required material, the Cubic type is recommended to be implemented.
Optimization of Infill Density, Layer Height, and Shell Thickness to Achieve Maximum Bending Strength and Minimum Printing Time of PLA 3D Printed Part The Jaya Suteja; Rico Handoko; Arum Soesanti
Jurnal Polimesin Vol 21, No 5 (2023): October
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v21i5.3883

Abstract

3D printing has advantages in making customized products, such as leg prosthetics. One of the required properties of 3D-printed leg prosthetics is their resistance to bending stress. Based on the literature review, the influence of the interaction among layer height, infill density, and shell thickness on the bending strength and printing time has not yet been investigated or optimized. This study aims to investigate the effect and optimize the layer height, infill density, and shell thickness to achieve the maximum bending strength and minimum printing time of a Polylactic Acid 3D printed part. This research studies three independent variables: layer height, infill density, and shell thickness. The independent variables of this research are bending strength and printing time. The bending test is conducted according to the ISO 178 standard. The printed specimen is tested using the bending testing machine Tarno Grocki to measure the maximum bending load the specimen can hold. The printing time is measured by using a stopwatch. The Response Surface Method is used as an optimization method to find the value of the maximum bending strength and minimum printing time of the 3D printed part. The optimum responses are achieved using 40 % infill density, 0.3 mm layer height, and 1.6 mm shell thickness. The maximum bending strength is 118. 5129 MPa and the minimum printing time is 11.1867 minutes.
Co-Authors Arum Soesanti Jesslyne Chenia Noel Samuel Eluzai Yedija Wijayanto The Jaya Suteja Timotius William Anggawirawan