Studies on the sound absorption properties of wood-based pulp fibre foams

Jose Cucharero Moya, Sara Ceccherini, Muhammad Awais, Kari Kammiovirta, Thaddeus Maloney, Lauri Rautkari, Tapio Lokki, Tuomas Hänninen

Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussaConference contributionScientific

15 Lataukset (Pure)

Abstrakti

Acoustic behaviour of wood fibres depends on material properties on different hierarchical structural levels, including molecular, microscopic, and macroscopic. In this paper, we present comprehensive studies on the effect of the hierarchical structure of wood pulp fibres on acoustical properties. In the molecular level,
structural polymers of wood and their arrangement in the cell wall are crucial in determining the material properties of the fibres. In the microscopic level, wood fibres are characterised by an irregular morphology and present average fibre lengths and widths ranging from 0.4 – 6 mm and 10 – 50 µm, respectively. In the
macroscopic level, the porous structure of a 3D-fibre network formed by means of foam-forming technique depends on the raw fibres as well as on the foam forming procedure used. The studied pulp fibre foams achieve comparable sound absorption properties to those of conventional synthetic porous materials. Increasing use of wood based materials in buildings contribute to reduce CO2 from the atmosphere by binding CO2 into the building structure for decades.
AlkuperäiskieliEnglanti
OtsikkoProceedings of the 24th International Congress on Acoustics: A03: Building Acoustics
KustantajaAcoustical Society of Korea (ASK)
Sivumäärä8
TilaJulkaistu - 25 lokak. 2022
OKM-julkaisutyyppiB3 Ei-soviteltu artikkeli konferenssin julkaisusarjassa
TapahtumaInternational Congress on Acoustics - Hwabaek International Convention Center (HICO), Gyeongju, Etelä-Korea
Kesto: 24 lokak. 202228 lokak. 2022
Konferenssinumero: 24
https://ica2022korea.org

Conference

ConferenceInternational Congress on Acoustics
LyhennettäICA2022
Maa/AlueEtelä-Korea
KaupunkiGyeongju
Ajanjakso24/10/202228/10/2022
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