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Acoustic Properties of Aerogels: Current Status and Prospects

Budtova, Tatiana and Lokki, Tapio and Malakooti, Sadeq and Rege, Ameya and Lu, Hongbing and Milow, Barbara and Vapaavuori, Jaana and Vivod, Stefanie L. (2023) Acoustic Properties of Aerogels: Current Status and Prospects. Advanced Engineering Materials, 25 (6), p. 2201137. Wiley. doi: 10.1002/adem.202201137. ISSN 1438-1656.

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Official URL: https://onlinelibrary.wiley.com/doi/full/10.1002/adem.202201137


Noise reduction remains an important priority in the modern society, in particular, for urban areas and highly populated cities. Insulation of buildings and transport systems such as cars, trains, and airplanes has accelerated the need to develop advanced materials. Various porous materials, such as commercially available foams and granular and fibrous materials, are commonly used for sound mitigating applications. In this review, a special class of advanced porous materials, aerogels, is examined, and an overview of the current experimental and theoretical status of their acoustic properties is provided. Aerogels can be composed of inorganic matter, synthetic or natural polymers, as well as organic/inorganic composites and hybrids. Aerogels are highly porous nanostructured materials with a large number of meso- and small macropores; the mechanisms of sound absorption partly differ from those of traditional porous absorbers possessing large macropores. The understanding of the acoustic properties of aerogels is far from being complete, and experimental results remain scattered. It is demonstrated that the structure of the aerogel provides a complex three-dimensional architecture ideally suited for promising high-performance materials for acoustic mitigation systems. This is in addition to the numerous other desirable properties that include low density, low thermal conductivity, and low refractive index.

Item URL in elib:https://elib.dlr.de/192981/
Document Type:Article
Additional Information:Dieses Paper wurde 2023 erneut in einem Best-Of-Band veröffentlicht (https://onlinelibrary.wiley.com/page/journal/15272648/homepage/best-of-advanced-engineering-materials-2023.html)
Title:Acoustic Properties of Aerogels: Current Status and Prospects
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Budtova, TatianaUNSPECIFIEDhttps://orcid.org/0000-0003-1835-2146UNSPECIFIED
Malakooti, SadeqNASA Glenn Research CenterUNSPECIFIEDUNSPECIFIED
Rege, AmeyaUNSPECIFIEDhttps://orcid.org/0000-0001-9564-5482UNSPECIFIED
Lu, HongbingThe University of Texas at DallasUNSPECIFIEDUNSPECIFIED
Milow, BarbaraUNSPECIFIEDhttps://orcid.org/0000-0002-6350-7728UNSPECIFIED
Vapaavuori, JaanaAalto UniversityUNSPECIFIEDUNSPECIFIED
Vivod, Stefanie L.NASA Glenn Research CenterUNSPECIFIEDUNSPECIFIED
Date:17 November 2023
Journal or Publication Title:Advanced Engineering Materials
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:p. 2201137
Keywords:silica aerogels, acoustic properties, bio-aerogels, composite aerogels, polymer aerogels
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Components and Systems
DLR - Research area:Aeronautics
DLR - Program:L CS - Components and Systems
DLR - Research theme (Project):L - MRO and Cabin
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Aerogels and Aerogel Composites
Deposited By: Rege, Dr. Ameya Govind
Deposited On:16 Jan 2023 09:45
Last Modified:01 Dec 2023 08:50

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