Abstract
This study investigates the influence of key fused deposition modeling (FDM) parameters—namely infill density. printing speed. and nozzle temperature—on the tensile behavior of 3D-printed PLA–wood composite anti-trichiral structures. Tensile experiments were conducted to evaluate the UTS and elongation at break. highlighting the strong dependence of mechanical response on both processing conditions and architectured geometry. A Taguchi-based experimental design was employed to generate the dataset used for training an artificial neural network (ANN) model. The ANN was applied as a predictive tool to estimate tensile properties and in combination with multi-criteria decision-making (MCDM) methods. to perform a multi-objective optimization balancing ultimate tensile strength (UTS) and elongation at break within the investigated parameter range. The results show that the highest measured UTS (6.12 MPa) was achieved at an infill density of 25% while the maximum elongation at break (19.3%) occurred at a lower infill density of 5%. The ANN predictions exhibited good agreement with experimental results. indicating promising predictive capability rather than definitive accuracy. and demonstrating the potential of data-driven modeling for guiding process optimization. Overall. this work introduces a novel hybrid ANN–MCDM framework applied to bio-based PLA–wood composite anti-trichiral lattices. providing new insights into processing–structure–property relationships and highlighting the relevance of artificial intelligence tools for the design and optimization of architectured materials in additive manufacturing.
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