About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Biomaterials and Implants
|
| Presentation Title |
A-1: Additively Manufactured Radially Graded Stainless Steel Lattices for Osseointegrative Applications |
| Author(s) |
Jacob T. Spencer, Wesley Miller, Magdalena Cruz, Sameehan Joshi |
| On-Site Speaker (Planned) |
Jacob T. Spencer |
| Abstract Scope |
Stress shielding is a common issue affecting osseointegrative implants and scaffolds caused by the mismatch between the elastic modulus of the bone and the implant material. We present research on using additive manufacturing to produce lattice structures with stiffness graded along the radial axis to match the radially graded mechanical properties of human bone. Finite element analysis of seven different lattice structures was performed to select an ideal lattice geometry, and the diamond triply periodic minimal structure (D-TPMS) lattice was selected. Cylindrical D-TPMS lattice samples were manufactured via laser powder bed fusion of 316L stainless steel. Wall thickness of the D-TPMS geometry varied from 1.1 mm at the sample edge to 0.5 mm at the center, producing a radially graded structure. This radially graded lattice material showed a reduction in stiffness compared to bulk 316L while maintaining yield strength within the typical range of femoral cortical bone. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Iron and Steel, Biomaterials |