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Abstract

In this study, six distinct infill designs Gyroid, Schwarz, Diamond, Lidinoid, SplitP, and Neovius were developed using ntopy engineering design software and fabricated with a Fused Deposition Modeling (FDM) printer to examine their tensile strength and weight characteristics. The analysis explored the relationship between structural geometry and mechanical performance, particularly tensile strength, while accounting for weight efficiency. Experimental results revealed significant differences in tensile behavior across the designs: Schwarz demonstrated the highest tensile strength (0.7 kN) and superior load-bearing capacity, while Lidinoid showed comparable strength but abrupt failure post-peak force. Neovius excelled in ductility with 7 mm elongation before failure, making it suitable for applications needing high deformation. Gyroid and Diamond offered a balanced performance with moderate strength and ductility, proving versatile for general use. SplitP exhibited unstable and erratic behavior, limiting its reliability for critical applications. These findings underscore the potential for optimizing lattice geometries for lightweight, high-performance applications using FDM, with Schwarz and Lidinoid suited for strength-centric uses, Neovius for flexibility, and Gyroid and Diamond for balanced mechanical needs.

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