The Sound Absorption Performance of Laser-Sintered Composite Biomimetic Wood Porous Structures
Li Zou, Aitian Zhang, Zhenbo Liu, Pengfei Du, Yanling Guo · 2024
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Description
Li Zou and four co-authors printed sound-absorbing panels that copy wood's porous inner structure, in a 2024 paper. Using laser sintering, they fused pine powder with resin into solid and porous forms, varying the pattern of straight pores and the air cavity behind each panel. Sound tests in an impedance tube measured how much noise each version swallowed at each pitch.
Even solid printed samples absorbed some sound through their microscopic pores. The wood-like versions did better, with pores at two scales giving broad absorption and a twin-peaked response in the middle and high ranges. Turning the panel or thickening its cavity shifted the peaks, letting designers aim at chosen frequencies. The authors conclude that laser-sintered biomimetic wood is a workable route to tunable acoustic materials, with building and engineering uses in view.
Catalog record
| CREATOR | Li Zou, Aitian Zhang, Zhenbo Liu, Pengfei Du, Yanling Guo |
|---|---|
| YEAR | 2024 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 42 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |