Email the author DESIGN OF CUSTOMIZED IMPLANT SLM MANUFACTURED
Abstract
Additive manufacturing has the potential to change how customized implants are fabricated but challenges remain. The present work aimed to reduce the weight of a facial titanium implant and to fabricate it by selective laser melting (SLM) process. Finite element analyses (FEA) were used to determine the von Mises stress and total deformation, applying loads from 0.5 kN to 5 kN. The results show that loads over 1.5kN distributed high von Mises tensions beyond 1000 MPa, value which was considered the yield point of titanium alloy (Ti6Al4V). The proposed redesigned model was 10% lighter and the FEA simulations reveal that the von Mises stress and total deformation are similar in both models (initial vs. redesigned). The polished SLM surfaces significantly reduce the roughness. The Sa roughness parameter calculated on the unpolished areas was 27-35 µm and on polished areas between 3 to 5 µm. Additionally, a lightweight concept with integrated lattice structures is presented. Future work is required to develop and test (mechanical and biological), new design concepts for facial implants.
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