| About this Abstract |
| Meeting |
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
| Symposium
|
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
| Presentation Title |
3D Printed Cellular Structures for Sound Absorption Applications |
| Author(s) |
Janith Godakawela, William Johnston, Bhisham Sharma |
| On-Site Speaker (Planned) |
Janith Godakawela |
| Abstract Scope |
Current additive manufacturing processes allow for repeatable fabrication of complex structures, which fosters design flexibility and innovation. This customizability is pivotal for creating efficient sound absorbers, which rely on the precise engineering of pore geometries to meet specific acoustic needs. Here, we showcase the effectiveness of using additive manufacturing to craft cellular materials for multifunctional noise reduction applications. Using traditional fused filament fabrication (FFF) and stereolithography (SLA) workflows, we characterize the sound absorption performance of various open-celled geometries, including triply periodic minimal surfaces (TPMS) and non-periodic spinodoids. Our techniques enable us to tailor the sound absorption performance by controlling the pore size. We test the acoustic performance using a two-microphone impedance tube, and our results show robust sound absorption behavior, especially in gyroid-type TPMS geometries. Our study suggests that 3D printed sound absorbers could be instrumental in mitigating noise pollution, particularly in the context of aircraft engine liners. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |