About this Abstract |
Meeting |
2021 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2021)
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Symposium
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Applications
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Presentation Title |
Multimaterial AM-aware Design of Asymmetric Acoustic Absorbers |
Author(s) |
Tyler Wiest, Andrew Lawrence, Michael Haberman, Carolyn Seepersad |
On-Site Speaker (Planned) |
Tyler Wiest |
Abstract Scope |
Materials that absorb sound waves asymmetrically have long been desired for a variety of acoustic applications. A material that exhibits asymmetric absorption of acoustic fields dissipates energy of an incident sound wave differently depending on the propagation direction. Using architected materials with multiple dissimilar materials is the most promising way to achieve this behavior. Multimaterial additive manufacturing (MM AM) processes have enabled fabrication of metamaterials with a greater variety of options for material and geometry. We design materials displaying asymmetric absorption such that they can be reliably manufactured using currently available MM AM processes while displaying performance that exceeds currently available material performance. Attainment of these prospective material combinations motivates specifications for a new MM AM process. We propose requirements for a build process that deposits high viscosity liquid with suspended heavy particles within a material matrix and seals them to form multi-material inclusions. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |