About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Mechanical Response of Materials Investigated through Novel In-situ Experiments and Modeling
|
Presentation Title |
Direct Measurement of the Effective Mechanical Properties of Additively Manufacturing Octet Truss Lattices using High Energy X-ray Diffraction |
Author(s) |
Nathan Johnson |
On-Site Speaker (Planned) |
Nathan Johnson |
Abstract Scope |
Modern additive manufacturing technologies have enabled manufacturing of lattice-like structures that have comparable mechanical properties to full-dense metal structures but at a fraction of the weight. As additive manufacturing technology advances trusses are being built with smaller and smaller feature sizes. This makes traditional mechanical characterization techniques difficult. This presentation details an experiment that uses high energy X-ray diffraction to measure the elastic stress-strain response of titanium octet truss lattices under compressive load. Octet truss structures were manufactured using laser powder bed fusion with truss sizes as small as 500 microns. X-ray diffraction enabled measurement of strain in regions only a hundred microns in width and height. The stress-strain response is shown along with measurements for the Young's modulus of the structure and the components of the elastic compliance tensor. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Mechanical Properties, Titanium |