WIT Press


Performance Improvement Of Sound-absorbing Materials Using Natural Bamboo Fibers And Their Application

Price

Free (open access)

Paper DOI

10.2495/HPSM040451

Volume

76

Pages

10

Published

2004

Size

590 kb

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

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