ANALISIS PENGARUH PARAMETER PROSES 3D-PRINTING MATERIAL HIGH IMPACT POLYSTYRENE TERHADAP RESPON AKURASI DIMENSI DAN KEKUATAN LENTUR MENGGUNAKAN METODE TAGUCHI

Additive Manufacture (AM) is a term that is officially known to many people for
the mention of names. But in the past it was often called quick prototyping and more
popular now is 3D printing. In the working process, this tool heats the High Impact
Polystyrene filament at its melting point and forms a pattern according to a
predetermined design. HIPS filament is one type of material that can be used in the 3D
printing process, which is rarely conducted single material research. This research was
conducted to determine the effect of the 3D printing process parameters of the HIPS
material on the dimensional accuracy response and bending testing.
The experimental design of the orthogonal matrix used in this study is L9 (3³).
Conducted 9 experiments with 3 process parameters used, namely nozzle temperature,
nozzle diameter, and flow rate. With 3 levels in each parameter (240 ° C, 250 ° C, 260
° C, 0.2, 0.3, 0.4 and 80%, 90%, 100%). The expected response in this study has an
impact on the accuracy of the dimensions of length overall, thickness and overall width
as well as the bending test with the data obtained, so it is analyzed using Signal to Noise
Ratio (SNR) and Analysis of variance (ANOVA).
Based on the analysis using SNR and ANOVA, the results of the process
parameters have the most influence on the different dimensions in each dimension. In
ANOVA analysis, the LO dimension is nozzle temperature with a contribution value
of 49.57%, while the T and WO dimensions are the flow rate with a contribution value
of 43.02% and 88.8% and for flexural strength the contribution value obtained is
90.38%. While the SNR results get the optimal combination of dimensions at nozzle
temperature level 2 with a value of 250 ° C, nozzle diameter level 1 with a value of 0.2
and flow rate level 2 with a value of 90%. While the optimal combination of bending
strength response is nozzle temperature level 3 with a value of 260 ° c, nozzle diameter
level 2 with a value of 0.3 mm and flow rate level 2 with a value of 90%. Based on the
confirmation experiment using a combination of a nozzle temperature of 260 ° C, a
nozzle diameter of 0.3 mm and a flow rate of 90%, the results were less than the
maximum with the bending test results of 25.132 MPa below the predicted value