Performance Improvement Of Sound-absorbing
Materials Using Natural Bamboo Fibers And
Their Application
Author(s)
T. Koizumi, N. Tsujiuchi & K. Fujita
Abstract
An acoustic material has been newly developed from the viewpoint of
environmental protection. For this purpose, we used a natural resource, bamboo
fiber, to manufacture sound-absorbing material. Until now, the sound-absorbing
material has been developed using the crushed bamboo fibers. This material,
however, is too heavy. To solve this problem, we have tried to develop a material
using the explosion method. The normal incidence sound absorption coefficient
of the bamboo fiber material was measured to be confirmed the basic properties.
In addition, the characteristic impedance and the propagation constant of the
material were measured. The contour lines of the sound absorption coefficient
were calculated to find the relation of thickness and air space of the material with
respect to
Keywords
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