Investigation of the Performance of Ti6Al4V Lattice Structures Designed for Biomedical Implants Using the Finite Element Method
Abstract
:1. Introduction
- Low-strut-diameter lattice structures were successfully manufactured using SLM.
- On the parallel building platform, the surfaces were smoother and better finished compared to the side surfaces.
- The octahedral lattice structure had the best dimensional accuracy among all types.
- The dimensions of the 3D-printed structures were smaller than the nominal CAD values, proving the shrinkage of the material upon solidification.
2. Materials and Methods
2.1. Raw Material
2.2. Lattice Structure Design
2.3. Manufacturing of Specimens
2.4. Compression Test
2.5. FEM Simulation
3. Results
3.1. Compression Tests
3.2. FEM Results
4. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Element | Chemical Composition Percentage % |
---|---|
Al | 5.50–6.50 |
V | 3.50–4.50 |
O | 0.13 |
N | 0.05 |
C | 0.08 |
H | 0.012 |
Fe | 0.25 |
Y | 0.005 |
Other elements each | 0.1 |
Other elements total | 0.4 |
Property | Value | Unit |
---|---|---|
Elastic modulus | 106,247 | MPa |
Mass density | 4.4 | g/cm3 |
Poisson’s ration | 0.34 |
Cell Type | Porosity Percentage (%) | Actual Volume of Latticed Body (mm3) | Bulk Volume (mm3) | Beam (Strut) Thickness (mm) |
---|---|---|---|---|
3D lattice infill pattern | 74 | 2079.17 | 8000 | 0.7 |
Double-pyramid lattice with cross | 74 | 2067.58 | 8000 | 0.85 |
Double-pyramid lattice and face diagonals | 71 | 2313.96 | 8000 | 0.6 |
Octahedral lattice 2 | 70 | 2431.76 | 8000 | 0.8 |
Laser Type | Scanning Speed | Focus Diameter | Power Supply | Building Volume |
---|---|---|---|---|
Yb-fiber laser; 400 W | Up to 7.0 m/s (23 ft./s) | 100 μm | 32 A/400 V | 250 × 250 × 325 mm |
Unit Cell | Average Length (mm) | Average Width (mm) | Average Height (mm) | Weight (g) |
---|---|---|---|---|
3D lattice infill pattern | 19.99 | 19.97 | 30.29 | 26.61 |
Double-pyramid lattice with cross | 20.00 | 20.00 | 30.24 | 26.98 |
Double-pyramid lattice and face diagonals | 19.96 | 20.03 | 30.24 | 28.34 |
Octahedral lattice 2 | 20.04 | 20.03 | 30.26 | 28.44 |
Cell Type | Effective Young’s Modulus (MPa) (Measurement) | Effective Young’s Modulus (MPa) (Numerical Analysis) | Deviation % |
---|---|---|---|
3D lattice infill pattern | 8676.67 | 9592.9 | 9.6 |
Double-pyramid lattice with cross | 7734.60 | 8356.4 | 7.4 |
Double-pyramid lattice and face diagonals | 8332.00 | 9260.1 | 10.0 |
Octahedral lattice 2 | 10,889.67 | 11,719 | 7.1 |
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Alkentar, R.; Máté, F.; Mankovits, T. Investigation of the Performance of Ti6Al4V Lattice Structures Designed for Biomedical Implants Using the Finite Element Method. Materials 2022, 15, 6335. https://doi.org/10.3390/ma15186335
Alkentar R, Máté F, Mankovits T. Investigation of the Performance of Ti6Al4V Lattice Structures Designed for Biomedical Implants Using the Finite Element Method. Materials. 2022; 15(18):6335. https://doi.org/10.3390/ma15186335
Chicago/Turabian StyleAlkentar, Rashwan, File Máté, and Tamás Mankovits. 2022. "Investigation of the Performance of Ti6Al4V Lattice Structures Designed for Biomedical Implants Using the Finite Element Method" Materials 15, no. 18: 6335. https://doi.org/10.3390/ma15186335