Dani Mardiyana

Universitas Nusa Putra

Talenta Agus Bahari Tafonao

Universitas Nusa Putra

Ferry Rajib Pamungkas

Universitas Nusa Putra

Zaid Sulaiman

Universitas Nusa Putra

Dodi Iwan Sumarno

Universitas Nusa Putra

Adi Nugraha

Universitas Sultan Ageng Tirtayasa

DOI: https://doi.org/10.19184/rotor.v19i1.60035 

ABSTRACT 

The growing prevalence of FDM-based 3D printing in contemporary manufacturing can be attributed to its inherent advantages, including the capacity to realize complex part geometries, accommodate high design adaptability, and facilitate expedited fabrication schedules. Despite these benefits, the attainment of acceptable dimensional accuracy remains a persistent challenge, as it is highly susceptible to the particular process parameters employed. The present work addresses this issue by applying the Taguchi optimization technique to ascertain the parameter interplay that yields the best dimensional outcomes for PLA+ filament components. The factors investigated were extrusion nozzle temperature, traverse speed, and shell thickness, each varied across three discrete levels and combined according to an L9 experimental layout. Specimens in the form of 20 mm cubes were printed, and their external dimensions were recorded along the X, Y, and Z reference axes with a digital vernier caliper. The acquired data were subjected to S/N ratio assessments, mean effect analyses, and ANOVA, all conducted under a smaller-is-better quality loss function to curtail size deviations. The experimental outcomes indicated that axis-specific optimal combinations existed: 215°C–80 mm/s–0.20 mm for the X direction; 210°C–80 mm/s–0.30 mm for the Y direction; and 215°C–75 mm/s–0.30 mm for the Z direction. According to the ANOVA, nozzle temperature emerged as the most influential factor, responsible for roughly 69% of the dimensional variability, with print speed and wall thickness contributing about 20.5% and 4.5%, respectively. Consequently, the parameter triad of 215°C nozzle temperature, 80 mm/s print speed, and 0.30 mm wall thickness is endorsed as the recommended practice for precision printing with PLA+ material.

Keywords: 3D printing, fused deposition modeling, PLA+, dimensional accuracy, Taguchi method.

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