| About this Abstract |
| Meeting |
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
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| Symposium
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2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Presentation Title |
Tailoring Anisotropic Material Properties of Hierarchical Lattice Structures through Strut Diameter and Orientation Variations: Implications for 3D-printed Ti6Al4V Lattices |
| Author(s) |
Ata Babazadeh Naseri, Jason Ye, Benjamin J. Fregly, C. Fred Higgs |
| On-Site Speaker (Planned) |
Ata Babazadeh Naseri |
| Abstract Scope |
Functional grading of strut diameters and orientations within hierarchical lattice structures (HLSs) offers the potential to achieve complex mechanical properties, including material anisotropy. However, the extent to which the desired anisotropy can be materialized in 3D-printed HLSs remains unclear. Here, we report on the experimental characterization of anisotropic mechanical properties in 3D-printed HLSs manufactured using Ti6Al4V alloy. Four anisotropic HLS designs were created by varying strut diameters or orientations on an 8-by-8-by-8 array, and 21 samples were fabricated and tested in two principal directions. Digital image correlation was used to record the deformations. We found that strut orientations were slightly more effective than strut diameters in generating stiffness anisotropy. However, statistical significance could not be established for the stiffness due to variations within samples of the same design. In contrast, the effective yield strength exhibited significant anisotropy. Our findings provide guidance for tailoring the material properties of 3D-printed HLSs. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |