Effects of Infill Patterns on the Mechanical and Tribological Behaviour of 3D-Printed Polylactic Acid/Bamboo Biocomposites for Structural Applications

Polymers, Journal Year: 2025, Volume and Issue: 17(4), P. 448 - 448

Published: Feb. 8, 2025

Composite materials are gaining attention owing to their exemplary characteristics and, if the eco-friendly, they attract much more. One such composite of poly lactic acid (PLA) combined with bamboo fiber in ratio 80:20 is selected for this study. The composites manufactured using additive manufacturing, or 3D-printing technique. In article, a novel approach infilling honeycomb around 12 infill patterns has been made, and all 3D-printed specimens were tested mechanical tribological properties. characterized Fourier Transform InfraRed spectroscopy (FTIR) X-Ray Diffraction (XRD) evaluate chemical composition crystallite size (CS), respectively. Based on results, cross pattern outperforms irregular geometries like Gyroid terms impact strength its efficient stress distribution superior interlayer bonding. By utilizing bidirectional reinforcement distributing loads uniformly, grid was able attain Shore D maximum hardness due strong 3D lattice structure; Octet very resistant wear, which improves energy absorption decreases material loss. Such honeycomb-filled can act as high-mechanical-strength components find applications aerospace drones allied structures.

Language: Английский

Mechanical Properties of 3D-Printed PLA Structures Observed in Framework of Different Rotational Symmetry Orders in Infill Patterns

Symmetry, Journal Year: 2025, Volume and Issue: 17(3), P. 466 - 466

Published: March 20, 2025

In this research, eco-friendly PLA filaments were 3D-printed using FDM. Three geometric shapes with different orders of rotational symmetry selected to create infill patterns: an equilateral triangle, a square, and regular hexagon. Additionally, each these three patterns was modified by rotating the basic shape used form pattern 0°, 15°, 30°. The objective study analyze how order within affects mechanical properties printed specimens. To ensure consistency, density kept as uniform possible across all samples produced. DMA tensile tests performed on produced obtained mean values in measurements compared Kruskal–Wallis test. Dunn’s test for post hoc pairwise multiple comparisons. showed that when comparing patterns, specimens 3 (triangle) highest modulus elasticity, 15° rotation regardless generally had storage modulus. Statistical analysis maximum force least affected angle, while 4 (square) 0° displayed significantly higher value than other patterns. 6 (hexagon) moderately angle rotation. Given numerous utilized FDM, results research offered new viewpoint insights into optimizing

Language: Английский

Enhancing Energy Absorption in Printed PLA Components Through Post-Processing and Topological Optimization

Results in Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 104972 - 104972

Published: April 1, 2025

Language: Английский