Analisis Pengaruh Internal Geometri Terhadap Sifat Mekanik Material Polylactic Acid (PLA) Dipreparasi Menggunakan 3D Printing

Pambudi, Arif Imbang (2017) Analisis Pengaruh Internal Geometri Terhadap Sifat Mekanik Material Polylactic Acid (PLA) Dipreparasi Menggunakan 3D Printing. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Proses riset dan penyempurnaan Fused Deposition Modelling 3D Printer, tentunya terdapat berbagai variabel dan parameter dengan tujuan menghasilkan objek tiga dimensi dengan hasil dan tingkat ketelitian mendekati desain aslinya serta dapat diaplikasikan seperti rancangan yang diharapkan. Selain pengaruh jenis printer pada metode FDM, material filament yang digunakan sebagai pengisi untuk mencetak objek tiga dimensi sudah tentu memiliki karakteristik sifat mekanik dan fisik yang berbeda, sehingga memungkinkan terjadinya perbedaan hasil objek untuk setiap material filament yang berbeda. Umumnya filament yang digunakan berasal dari material termoplastik jenis Polylactid Acid (PLA). Kondisi berikutnya yang berpengaruh adalah desain internal geometri dan dimensi dari objek yang akan dicetak. 3D printing FDM bekerja dengan prinsip layering dengan proses bottom up ketika mencetak objek. Hal tersebut dapat memengaruhi kualitas objek hasil cetak tiga dimensi, mengingat setiap objek memiliki ukuran yang berbeda dan desain geometri tertentu. Penelitian ini dilakukan untuk mengetahui pengaruh variasi internal geometri dan dimensinya terhadap sifat mekanik dari PLA menggunakan 3D Printer. Internal geometri yang divariasikan adalah triangle dan honeycomb, dengan variasi ketebalan setiap geometri 1 mm dan 2 mm, serta variasi sumbu simetri 4,5 mm dan 9 mm. Hasil penelitian menunjukkan bahwa sampel kontrol memiliki hasil kekuatan tarik dan bending yang sesuai dengan referensi datasheet filament PLA. Objek dengan internal geometri triangle berukuran 9 mm dan ketebalan 2 mm memiliki kekuatan tarik dan bending yang lebih baik dari geometri honeycomb. ============================================================================================ The process of research Fused Deposition Modelling 3D Printer of course there are many variables and various parameters with the aim of producing three-dimensional objects with the results and the level of accuracy approaching its original design and can be applied as the design expected. In addition to the influence of the type of printer in FDM method, filament material which is used as a filler for printing three-dimensional objects is certainly has different characteristic on mechanical and physical properties, thus enabling objects to any differences in the results of different filament material. Generally filament used came from a thermoplastic material types Polylactic Acid (PLA). Subsequent conditions that influence the internal geometry design and dimensions of the object to be printed. FDM 3D printing works on the principle of layering with a bottom-up process when printing the object. It can affect the quality of the printed three-dimensional objects, considering each object has a different size and design of specific geometry. This study was conducted to determine the effect of variations in the internal geometry and dimensions of the mechanical properties of PLA using a 3D printer. Internal geometry is varied triangle and honeycomb, with each geometry variations in thickness of 1 mm and 2 mm, then the variations of geometry size are 4,5 mm and 9 mm. The results showed that the control sample has a tensile and flexural strength results that correspond to the reference datasheet PLA filament. Triangle object with internal geometry size 9 mm and thickness 2 mm has a tensile and flexural strength better than honeycomb geometry.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: 3D Printing, internal geometry, Polylactic Acid, mechanical properties
Subjects: T Technology > T Technology (General)
T Technology > TA Engineering (General). Civil engineering (General) > TA645 Structural analysis (Engineering)
T Technology > TP Chemical technology > TP1140 Polymers
Divisions: Faculty of Industrial Technology > Material & Metallurgical Engineering > (S1) Undergraduate Theses
Depositing User: ARIF IMBANG PAMBUDI
Date Deposited: 10 Aug 2017 01:23
Last Modified: 05 Mar 2019 04:31
URI: http://repository.its.ac.id/id/eprint/42748

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