The Development Of Sound Absorbing Materials Using Natural Bamboo Fibers

By T. Koizumi, N. Tsujiuchi, A. Adachi. 2002

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The effect of physical parameters on sound absorption properties of natural fiber mixed nonwoven composites (2012, background): “As the density of the sample increases, sound absorption value tends to increase in the midto-high frequency ranges.(15) In this research we developed several composites both natural fiber and petrochemical fiber based and investigated the effect of density, thickness, fiber type, air permeability, ”
Acoustic Absorption of Natural Fiber Composites (2016, background): “The effective sound absorption of any composite material can be achieved when it has a more tortuous path, higher surface area, higher flow resistivity, and low porosity within it at the optimal range [31].”
Factors Influencing Acoustic Performance of Sound Absorptive Materials (2009, background): “A study by Koizumi et al. (2002) showed the increase of sound absorption value in the middle and higher frequency as the density of the sample increased.”