Investigation of The Effects of Material Extrusion Parameters on The Compressive Properties of Onyxtm Composites Using Honeycomb Lattice Configurations.
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Abstract
Honeycomb patterns find extensive use across various fields such as engineering, architecture, and transportation. The rapid development of custom structures is made possible through Digital Manufacturing techniques. This study employs an experimental approach to investigate how different material extrusion (MEX) elements impact the natural and mechanical properties of Triagonal honeycomb lactic-structured composites made of Onyx™. To assess the impact of various Material Extrusion (MEX) parameters on the lattice structure, the study examines changes in density, compressive strength, and structural area deviation by adjusting factors such as infill density, layer height, infill pattern, build orientation, and the number of walls.
To achieve maximum compressive strength, the study identified that the optimal parameters include a layer height of 0.1 mm, an infill density of 50%, a build orientation of 90°, a rectilinear infill pattern, and three walls. These specific settings were found to be the most effective for enhancing compressive strength.The mechanical properties of lattice structures made from Onyx™ composite are primarily affected by infill density, build orientation, and infill pattern. Additionally, structures with three walls exhibit greater resistance to buckling compared to those with one or two walls.This study identifies build direction and layer height as the main factors influencing structural area deviation in integrated lattices.
The paper also presents a topologically optimized lattice-structured bracket designed for maximum load-bearing capacity. This bracket could find applications in sports action cameras, prosthetics, surgical planning, and medical or dental instruments.