This article presents a groundbreaking method for noise reduction through a rainbow-based labyrinthine design in metamaterials. The authors detail the comprehensive process from numerical design, unit cell (UC) modeling, to experimental validation using selective laser sintering techniques. The resulting labyrinthine sound absorption panel exhibited superb acoustic performance, especially around the 1 kHz frequency range. Furthermore, numerical models suggested enhancements like foam filling could further bolster performance. Its modularity makes it suitable for diverse applications across fields like acoustics, automotive, and aerospace, offering an innovative alternative to conventional soundproofing solutions.
The study demonstrates a novel approach to noise attenuation utilizing a rainbow-based design and labyrinthine metamaterials, achieving ideal sound absorption in the low frequency range.
We meticulously described the design and validation process, from numerical modeling to experimental characterization, ensuring the panel's effective noise control properties.
Our experimental tests showed that the final structure achieves excellent sound absorption centered at 1 kHz, validating the proposed labyrinthine panel concept.
This modular design can be adapted for various applications such as room acoustics, automotive components, and aerospace, offering an innovative alternative to traditional materials.
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