Sustainable Acoustic Metasurfaces for Sound Control
AbstractSound attenuation with conventional acoustic materials is subject to the mass law and requires massive and bulky structures at low frequencies. A possible alternative solution is provided by the use of metamaterials, which are artificial materials properly engineered to obtain properties and characteristics that it is not possible to find in natural materials. Theory and applications of metamaterials, already consolidated in electromagnetism, can be extended to acoustics; in particular, they can be applied to improve the properties of acoustical panels. The design of acoustic metasurfaces that could effectively control transmitted sound in unconventional ways appears a significant subject to be investigated, given its wide-ranging possible applications. In this contribution, we investigate the application of a metasurface-inspired technique to achieve the acoustical insulation of an environment. The designed surface has subwavelength thickness and structuring and could be realized with cheap, lightweight and sustainable materials. We present a few examples of such structures and analyze their acoustical behavior by means of full-wave simulations. View Full-Text
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Gori, P.; Guattari, C.; Asdrubali, F.; de Lieto Vollaro, R.; Monti, A.; Ramaccia, D.; Bilotti, F.; Toscano, A. Sustainable Acoustic Metasurfaces for Sound Control. Sustainability 2016, 8, 107.
Gori P, Guattari C, Asdrubali F, de Lieto Vollaro R, Monti A, Ramaccia D, Bilotti F, Toscano A. Sustainable Acoustic Metasurfaces for Sound Control. Sustainability. 2016; 8(2):107.Chicago/Turabian Style
Gori, Paola; Guattari, Claudia; Asdrubali, Francesco; de Lieto Vollaro, Roberto; Monti, Alessio; Ramaccia, Davide; Bilotti, Filiberto; Toscano, Alessandro. 2016. "Sustainable Acoustic Metasurfaces for Sound Control." Sustainability 8, no. 2: 107.
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