PSI - Issue 68

A. Ceci et al. / Procedia Structural Integrity 68 (2025) 372–378 A. Ceci et al. / Structural Integrity Procedia 00 (2025) 000–000

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Fig. 9 : Stress-Strain diagram a) Test #1 b) Test #2.

5. Conclusions After optimization of the Lost PLA method, high accuracy in the manufacturing of the AA 6082 lattice structures has been achieved, in comparison with the 3D model. Experimental analysis deviates from numerical analysis (FEA) due to defects arising from the entire Lost PLA process, with a 3.5% error in Test #2 in terms of deformation corresponding to σ MAX . Image analysis techniques have demonstrated a reliable level of precision for the characterization of cellular structures. In particular: DFT accurately approximates the behaviour of the tests up to deformations of 12% for Tests #1 and #2, with errors of 0.3% and 0.8%, respectively. DIC correctly approximates the entire behaviour of the experimental tests, with errors of 1.8% and 2% in terms of σ MAX for Tests #1 and #2 respectively. References Abdullah, N.N.A.A., Abdullah, A.H., Ramlee, M.H., 2024. Current trend of lattice structures designed and analysis for porous hip implants: A short review. Materials Today: Proceedings, 110, 96-100. Ahmad, A., Belluomo, L., Bici, M., Campana, F., 2023. Bird’s Eye View on Lattice Structures: Design Issues and Applications for Best Practices in Mechanical Design. Metals, 13(10), 1666. Armanfar, A., Taşmektepligil, A.A., Kilic, R.T., Demir, S., Cam, S., Karafi, Y., El Majd, B. A., Günpinar, E., 2024. Embedding lattice structures into ship hulls for structural optimization and additive manufacturing. Ocean Engineering, 301, 117601. Iandiorio, C., Mattei, G., Marotta, E., Costanza, G., Tata, M.E., Salvini, P., 2024. The Beneficial Effect of a TPMS Based Fillet Shape on the Mechanical Strength of Metal Cubic Lattice Structures. Materials, 17(7), 1553. Sajjad, U., Rehman, T., Ali, M., Park, C.W., Yan, W.M., 2022. Manufacturing and potential applications of lattice structures in thermal systems: a comprehensive review of recent advances. International Journal of Heat and Mass Transfer, 198, 123352. Salvini, P., Lux, V., Marotta, E., 2015. Modal Pursuit to Detect Large Displacements and Strain Fields by Digital Image Correlation. Strain, 51(1), 30-42. Tao, W., Leu, M.C., 2016. Design of Lattice Structure for Additive Manufacturing. Proceedings of ISFA2016, International Symposium on Flexible Automation Cleveland, Ohio, U.S.A., 1 - 3 August 2016, pp.325-332.