Günther, FabianFabianGüntherWagner, MarkusMarkusWagnerPilz, S.S.PilzGebert, AnnettAnnettGebertZimmermann, MartinaMartinaZimmermann2024-04-302024-04-302023https://publica.fraunhofer.de/handle/publica/467036Lattices based on triply periodic minimal surfaces (TPMS) are attracting increasing interest due to their excellent structure-property relationships. However, the potential can only be exploited if their structural integrity is ensured. This requires a fundamental understanding of the impact of imperfections that arise during additive manufacturing. Therefore, in the present study, the structure-property relationships of TPMS lattices, including their imperfect morphologies, are investigated experimentally and numerically. Specifically, the focus is on biomimetic TPMS lattices fabricated by laser powder bed fusion (LPBF) from the biocompatible alloy Ti-42Nb. Based on computed tomography analyses, typical LPBF-imperfections are identified before a modeling procedure is developed for reconstruction of the as-built morphology. Finally, compression tests are performed and compared with the accompanying finite element studies. This work highlights the central importance of process-related imperfections for the structure-property relationships of LPBF-processed TPMS lattices and provides a numerical tool to capture their effects. Given high simulation accuracy and flexibility, this approach might become a key factor in the future design process of additively manufactured structures.enlattice structurestriply periodic minimal surfacesadditive manufacturingimperfect latticesnumerical reconstructionLaser Powder Bed FusionDDC::600 Technik, Medizin, angewandte Wissenschaftenconference paper