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Sustainable acoustic absorbers from the biomass

机译:来自生物质的可持续吸声器

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摘要

There is currently considerable interest in developing sustainable absorbers, either from biomass materials or recycled materials, and it is the former that is the subject of this paper. A number of potential candidate materials are available from the biomass in the form of organic fibres. Non-fibrous materials, such as configurations of whole straw or reed, can also act as sound absorbers. A combination of impedance tube and reverberation chamber measurements have been carried out for a number of biomass materials and the effectiveness of current models for the prediction of the absorptive properties of natural fibres has been investigated. Examination of the acoustical characteristics of a range of natural fibres has confirmed their effectiveness as porous sound absorbers and also the limitations of current models for predicting their performance. Examination of the acoustical performance of materials consisting of different configurations of whole reeds and straws has revealed that these also possess considerable potential for application as broadband sound absorbers with particularly good low frequency absorption characteristics. The combination of natural fibres and whole reeds offer the possibility of developing a range of sustainable absorbers which act very effectively across the complete audio frequency range.
机译:目前,人们对利用生物质材料或再生材料开发可持续吸收剂的兴趣很大,而前者是本文的主题。从生物质中可以以有机纤维的形式获得许多潜在的候选材料。非纤维材料,例如整个稻草或芦苇的形状,也可以用作吸音材料。已经对多种生物质材料进行了阻抗管和混响室测量的组合,并且已经研究了用于预测天然纤维吸收特性的当前模型的有效性。对一系列天然纤维的声学特性的研究证实了它们作为多孔吸声器的有效性,也证实了当前模型预测其性能的局限性。对由整个芦苇和稻草的不同构型组成的材料的声学性能的研究表明,它们还具有作为具有特别好的低频吸收特性的宽带吸声器的应用潜力。天然纤维和整个芦苇的结合提供了开发一系列可持续吸收器的可能性,这些吸收器可以在整个音频范围内非常有效地发挥作用。

著录项

  • 来源
    《Applied Acoustics》 |2011年第6期|p.350-363|共14页
  • 作者单位

    Acoustics Research Unit, School of Architecture, University of Liverpool, Liverpool L69 3BX, UK;

    Acoustics Research Unit, School of Architecture, University of Liverpool, Liverpool L69 3BX, UK;

    Acoustics Research Unit, School of Architecture, University of Liverpool, Liverpool L69 3BX, UK;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    sound absorbers; sustainable; biomass; natural fibres; reeds;

    机译:吸声器可持续发展生物质天然纤维芦苇;
  • 入库时间 2022-08-17 13:30:37

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