Investigation Of Sound Absorption Properties Of Bark Cloth Nonwoven Fabric And Composites

The quest for sound-absorbing materials that are not only environmentally friendly, but also sustainable is the foremost reason for natural fibre-acoustic materials. Bark cloth is a natural non-woven fabric that is largely produced from Ficus trees. An exploratory investigation of bark cloth a non-w...

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Bibliographic Details
Published inAUTEX Research Journal Vol. 15; no. 3; pp. 173 - 180
Main Authors Rwawiire, Samson, Tomkova, Blanka, Gliscinska, Eulalia, Krucinska, Izabella, Michalak, Marina, Militky, Jiri, Jabbar, Abdul
Format Journal Article
LanguageEnglish
Published Lodz De Gruyter Open 01.09.2015
De Gruyter Poland
De Gruyter
Subjects
Acoustic properties
Bark cloth
Composites
Epoxy
Investigations
Materials science
Noise control
Textiles
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Summary:The quest for sound-absorbing materials that are not only environmentally friendly, but also sustainable is the foremost reason for natural fibre-acoustic materials. Bark cloth is a natural non-woven fabric that is largely produced from Ficus trees. An exploratory investigation of bark cloth a non-woven material and its reinforcement in epoxy polymer composites has been fabricated and investigated for the sound absorption properties so as to find the most suitable applications and also to see whether bark cloth can be used in some applications in place of man-made fibres. Three types of material species were investigated with their respective composites. The fibre morphology showed bark cloth to be a porous fabric that showed promising sound absorption properties at higher frequencies. The sound absorption results of four-layer material selections of Ficus natalensis, Ficus brachypoda and Antiaris toxicaria bark cloth showed sound absorption coefficient of 0.7; 0.71 and 0.91 at f > 6400 Hz, respectively. The bark cloth reinforced laminar epoxy composites had reduced sound absorption coefficients, which ranged from 0.1 to 0.35, which was attributed to decreased porosity and vibration in the bark cloth fibre network.
ISSN:2300-0929
1470-9589
2300-0929
DOI:10.1515/aut-2015-0010