KAJIAN KEKUATAN TARIK DAN STRUKTUR MIKRO FILAMEN 3D PRINTING POLYETHYLENE TEREPTHTALATE (PET) MENGGUNAKAN DIAMETER NOZEL 0.4 MM DAN LAYER THICKNESS 0.2 MM

NAUFAL, RAMADHAN and Diah, Kusuma Pratiwi (2024) KAJIAN KEKUATAN TARIK DAN STRUKTUR MIKRO FILAMEN 3D PRINTING POLYETHYLENE TEREPTHTALATE (PET) MENGGUNAKAN DIAMETER NOZEL 0.4 MM DAN LAYER THICKNESS 0.2 MM. Undergraduate thesis, Sriwijaya University.

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Abstract

The development of manufacturing technology through 3D printing methods, such as Fused Deposition Modeling (FDM), has revolutionized the industrial paradigm with advantages in efficiency, design flexibility, and production speed. This technology enables the creation of three-dimensional objects with high precision, opening up new opportunities in various industries. Polyethylene terephthalate (PET), a plastic commonly used in beverage bottles, becomes a potential raw material for recycling processes. The recovery of PET plastic bottle waste not only reduces the burden of plastic waste but also provides opportunities for the reuse of materials in various applications. This research highlights the main issues in 3D printing technology and the use of recycled raw materials, specifically the influence of print orientation on tensile strength, microstructure, and print accuracy of samples using a 0.4 mm nozzle and 0.2 mm layer thickness. The results of the study show that the mechanical properties of PET filamen differ in each printing direction. Samples were tested using a Zwick Roell Z020 device and analyzed with a Scanning Electron Microscope (SEM) to evaluate the microstructure and print accuracy. Sample A showed maximum stress between 14.5 MPa and 19.4 MPa with an average of 16.98 MPa. Sample B showed maximum stress between 21.2 MPa and 26.5 MPa with an average of 23.1 MPa. SEM indicated that sample C2, with the highest stress value, had high structural density and few micro defects, while sample A1, with the lowest stress, exhibited many micro defects and high porosity. The dimensions of the printed cubes showed deviations from the target size. The deviations for the three dimensions of X, Y, and Z were very small, with side X deviating by only 0.3048%, side Y by 0.0944%, and side Z by 0.1449%. Specimens with a 0.4 mm nozzle diameter and 0.2 mm layer thickness showed variations in tensile strength, with specimen C, printed horizontally, having the highest tensile strength, followed by specimen B, and specimen A, printed vertically. The sample with the lowest tensile strength (A1) exhibited structural deficiencies such as high porosity and many micro defects

Item Type:	Thesis (Undergraduate)
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ1-1570 Mechanical engineering and machinery T Technology > TJ Mechanical engineering and machinery > TJ1350-1418 Hoisting and conveying machinery
Divisions:	03-Faculty of Engineering > 21201-Mechanical Engineering (S1)
Depositing User:	Naufal Ramadhan
Date Deposited:	05 Sep 2024 02:04
Last Modified:	05 Sep 2024 02:04
URI:	http://repository.unsri.ac.id/id/eprint/156050

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