Abstract
Optimization of 3D printing process parameters with PETG material to the flexural strength response using the Taguchi method has been carried out. This study uses L9 (3 3 ) orthogonal arrays experimental design using three process parameters, namely nozzle temperature, extrusion width, and feed rate with three levels in each parameter (240 ° C, 245 ° C, 250 ° C, 0.3 mm 0.35mm, 0.4mm, 50%, 75%, 100%). Specimens were prepared according to ISO 178: 2010 Standard using a Prusa-i3 3D printer. Following this their dimensions, mass, production time, and flexural strength were examined. The flexural strength response was analyzed using the Taguchi method via SN Ratio and ANOVA analysis to obtain the optimal parameters. The results showed that the most influential process parameters on the response of flexural strength respectively were the nozzle temperature, extrusion width and feed rate with an optimal combination of parameters namely nozzle temperature (250 ° C), extrusion width (0.35 mm), and feed rate (75%). The confirmation experiments showed that the optimal parameter combination obtained the highest flexural strength with a smaller data deviation (52.98 ± 0.65 MPa). In addition, all products being produced posses dimensions according to the standards used.
Highlights
(250 ° C), extrusion width (0.35 mm), and feed rate (75%)
The confirmation experiments showed that the optimal parameter combination obtained the highest flexural strength with a smaller data deviation (52.98 ± 0.65 MPa)
Dalam hal proses produksinya senantiasa membentuk dan menambah maka proses ini sering disebut sebagai additive manufacturing
Summary
Proses rapid prototype adalah metode-metode yang digunakan untuk membuat model berskala, part satu produk, ataupun rakitan (assembly). Namun dalam hal kekuatan lentur dari produk dengan bahan PLA, dari parameter proses yang digunakan yaitu layer thickness, deposition angle, dan infill pattern, terkonfirmasi bahwa layer thickness paling berpengaruh terhadap respon kekuatan lentur [6]. Hasil yang didapat menunjukkan kekuatan lentur berturut-turut adalah 69 MPa, 33 MPa, 37 MPa dan 10,7 MPa. Peneliti lain melakukan optimalisasi parameter proses 3D printing pada bahan ABS. Berdasarkan penelitian sebelumnya, parameter proses berupa nozzle temperature, extrusion width, infill patern dan feed rate berpengaruh terhadap kuat tarik produk 3D printing. Pada penelitian ini dilakukan optimasi menggunakan kombinasi parameter proses yang berpengaruh terhadap produk 3D printing dengan bahan PETG meliputi nozzle temperature, extrusion width, dan feed rate dengan respon kekuatan lentur (flexural strength). Sebagai tambahan pertimbangan untuk kualitas dan produktifitas produk dilakukan pengukuran dimensi, massa produk dan waktu produksi
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