Acoustic Applications of a Foamed Geopolymeric-Architected Metamaterial

Acoustic Applications of a Foamed Geopolymeric-Architected Metamaterial

The paper compares and evaluates the influence of the presence of perforations on the sound absorption coefficient (SAC) of a negative stiffness metamaterial based on a foamed ceramic geopolymer. Chemical–physical, microstructural, dynamic–mechanical, and sound characterisations are presented. A rig...

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Bibliographic Details
Main Authors: Giuseppe Ciaburro, Gino Iannace, Laura Ricciotti, Antonio Apicella, Valeria Perrotta, Raffaella Aversa
Format: Article
Language:English
Published: MDPI AG 2024-01-01
Series:Applied Sciences
Subjects:
geopolymer
architected metamaterials
negative stiffness
foamed element
impedance tube
sound absorption
Online Access:https://www.mdpi.com/2076-3417/14/3/1207

Internet

https://www.mdpi.com/2076-3417/14/3/1207

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