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Article Dans Une Revue Scientific Reports Année : 2021

Natural sonic crystal absorber constituted of seagrass (Posidonia Oceanica) fibrous spheres

Résumé

We present a 3-dimensional fully natural sonic crystal composed of spherical aggregates of fibers (called Aegagropilae) resulting from the decomposition of Posidonia Oceanica. The fiber network is first acoustically characterized, providing insights on this natural fiber entanglement due to turbulent flow. The Aegagropilae are then arranged on a principal cubic lattice. The band diagram and topology of this structure are analyzed, notably via Argand representation of its scattering elements. This fully natural sonic crystal exhibits excellent sound absorbing properties and thus represents a sustainable alternative that could outperform conventional acoustic materials.
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Dates et versions

hal-03436105 , version 1 (23-11-2021)

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Laurianne Barguet, Vicente Romero-García, Noé Jiménez, Lluis Miquel Garcia-Raffi, Victor Sanchez-Morcillo, et al.. Natural sonic crystal absorber constituted of seagrass (Posidonia Oceanica) fibrous spheres. Scientific Reports, 2021, 11, pp.700. ⟨10.1038/s41598-020-79982-9⟩. ⟨hal-03436105⟩
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