Lusia Permata Sari Hartanti, Rifky Ismail, J. Jamari, Athanasius P. Bayuseno
Material extrusion-based additive manufacturing is often used to produce biomedical products. One of the techniques is Fused Deposition Modeling (FDM). The biodegradable interference screw from biocomposite material has been developed to enhance metal interference screw limitations. The objective of this study was to find optimum FDM process parameters or factors (printing temperature, printing speed, and infill percentage) for better physical, mechanical, and biological characteristics of the interference screw. The biocomposite filament was composite of Polylactic acid, Polycaprolactone, and Hydroxyapatite. Process parameter optimization used a Response Surface Methodology (RSM) with 40 experiment runs. The interaction between process parameters and the response was studied and modeled. The developed RSM model has been evaluated for adequacy using analysis of variance. The results show that the optimum factor levels obtained using RSM were 207 °C for printing temperature, 42 mm/s for printing speed, and 83% for infill percentage. A confirmation experiment was performed to compare the predicted and experimental results and validate the accuracy of the developed model. The developed model accurately predicted responses with a permissible error limit of 5%. Copyright © 2024 Praise Worthy Prize S.r.l.-All rights reserved. © 2024 Praise Worthy Prize S.r.l.-All rights reserved.
Department of Mechanical Engineering, Faculty of Engineering, Diponegoro University, Central Java, Semarang, 50275, Indonesia; Department of Industrial Engineering, Faculty of Engineering, Widya Mandala Surabaya Catholic University, East Java, Surabaya, 60114, Indonesia