About this Abstract |
Meeting |
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
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Symposium
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2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
Presentation Title |
More Efficient Lattice Testing using an Optimal Design of Experiments Approach |
Author(s) |
Joseph W. Fisher, Joseph Bartolai, Christian Rivera, Timothy W. Simpson, Simon W. Miller |
On-Site Speaker (Planned) |
Joseph W. Fisher |
Abstract Scope |
A design of experiments (DoE) was performed to develop response surfaces relating elastic modulus and yield strength of five equation-based lattice topologies to volume fraction and cell size over ranges of 0.1 to 0.65 and 5-25mm respectively. Generating this type of multi-dimensional property data for metamaterials, like lattices and other cellular solids, is extremely challenging and experiments in the literature typically cover a small parameter space or a single variable to reduce the cost and time. An I Optimal DoE was performed to define the properties of the lattice specimens generated in nTop, built on a FormLabs Form 3L, and tested in quasi-static compression; this DoE captures curvature in the response surfaces for each topology using relatively few specimens. The value of this testing approach, results of the experiment, and generalization of the data to other materials is discussed. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |