Optimizing printing parameters for enhanced mechanical properties of 3D printed PLA octet lattice structures

Abstract

This study explores the impact of printing parameters on the mechanical properties of 3D printed octet lattice structures using PLA material. Focused on optimizing layer height, print speed, and infill density, the study employed Taguchi methodology. Compressive strength and strength per mass were the key metrics analyzed. The optimized parameters, determined as 0.2 mm layer height, 90 mm/s print speed, and 100% infill density, significantly enhanced compressive strength. Infill density emerged as the most influential factor, contributing to 82.74% of the overall variation. A robust predictive model was developed, achieving a 92.06% accuracy in estimating compressive strength per mass values. These findings provide crucial guidelines for manufacturing high-strength, lightweight PLA octet lattice structures, vital in industries like aerospace and automotive. This study advances additive manufacturing, opening avenues for further research in diverse lattice structures and materials.

Optimization of Charpy Impact Strength of Tough PLA Samples Produced by 3D Printing Using the Taguchi Method

“…The FDM method is currently prevalent due to the development of affordable devices, the fact that it does not require health-harmful solvents and adhesives during sample production, the inexpensive cost of printing materials, and the small size of the devices able to fit on a tabletop [ 9 ]. The FDM process involves using different thermoplastic materials to produce objects with complex shapes [ 10 ]. Polylactic acid, known as PLA, is a specialized thermoplastic material that can be sourced from renewable raw materials like cornstarch or sugarcane, rendering it sustainable.…”