About this Abstract |
Meeting |
2021 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2021)
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Symposium
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Applications
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Presentation Title |
Additively Manufactured Heterogeneously Porous Metallic Bone |
Author(s) |
Pan Wang, Mui Ling Sharon Nai |
On-Site Speaker (Planned) |
Pan Wang |
Abstract Scope |
A compatible artificial bone implant requires large pores for enhanced nutrients transports, small pores to allow cell seeding and bone-like mechanical properties to avoid stress shielding. Herein, we report novel improved gyroid lattices with millimeter-scaled gyroid wall spacings and micrometer-scaled additional pores on the walls. Designs are successfully fabricated by electron beam melting using Ti-6Al-4V to high part qualities while exhibiting bone-like mechanical properties. The improved design also eliminates brittle failure by allowing the structure to deform more stably. Furthermore, we studied the size and boundary effects to revealed the non-trivial functions of built relative densities and geometrical imperfections, generally deviating that of modeling. The addition of edges to close up the lattice is also investigated in which is interestingly found to highly improve mechanical properties with minimal addition of density while the same pore sizes can be retained. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |