Lusia Permata Sari Hartanti, B. Bawono, T. Yuniarto, J. Mulyono, J.J. Nauolim, R. Ismail, J. Jamari, A.P. Bayuseno, P.W. Anggoro
Fused deposition modeling (FDM), one of AM techniques, was used in this study to manufacture polylactic acid (PLA) interference screws. The interference screws’ dimensional accuracy was measured as a physical characteristic. This study focused on how process parameters affected the dimensional accuracy of the interference screws and found the optimum process parameters for dimensional accuracy. The printing temperature (PT), printing speed (PS), and infill percentage (IP) were independent process parameters. Full factorial design (FFD) generated a set of design experiments. The lowest and most considerable deviations in head diameter were 1% and 12%, respectively, and the lowest and highest deviations in length were 1% and 13%, respectively. While the PS was insignificant for either deviation of length or deviation of head diameter, the PT and IP were the important variables determining length or deviation of head diameter. The result optimal conditions of process parameter settings were 195 °C of PT, 20 mm/s of PS, and 25% of IP, which produces a composite desirability function (DF) value of 82.63%. DF for deviation of head diameter and deviation of length was 78.03% and 87.5%, respectively, with the optimal response value for deviation of head diameter and deviation of length being 3.43% and 2.5%, respectively. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2025.
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; Department of Industrial Engineering, Faculty of Industrial Technology, University of Atma Jaya Yogyakarta, Yogyakarta, 55281, Indonesia