Sound absorption coefficient and sound transmission loss of rice hull mat

被引:2
|
作者
Kang C.-W. [1 ]
Lee N.-H. [2 ]
Jang S.-S. [3 ]
Kang H.-Y. [3 ]
机构
[1] Department of Housing Environmental Design, and Research Institute of Human Ecology, College of Human Ecology, Chonbuk National University, Jeonju
[2] Department of Wood Science & Technology, College of Agriculture & Life Sciences, Chonbuk National University, Jeonju
[3] Department of Forest Products, College of Agriculture & Life Sciences, Chungnam National University, Daejeon
来源
Journal of the Korean Wood Science and Technology | 2019年 / 47卷 / 03期
基金
新加坡国家研究基金会;
关键词
Plywood; Rice hull; Sound absorption coefficient; Sound transmission loss; Transfer function method; Transfer matrix method;
D O I
10.5658/WOOD.2019.47.3.290
中图分类号
学科分类号
摘要
The sound absorption coefficient and transmission loss of several types of rice hull mats with varying apparent densities and thicknesses are estimated in this paper using the transfer function and matrix methods, respectively, to evaluate the possibility of using rice hull as an acoustic construction material. The mean sound absorption rates of 10-cm-thick rice hull mats with target densities of 0.10 g/cm3, 0.12 g/cm3, and 0.14 g/cm3 were 0.91, 0.92, and 0.95, respectively, while those of the 1-cm-thick plywood attached to the back of the rice hulls were 0.90, 0.92, and 0.92, respectively. The means of the sound transmission loss of the 10 cm-thick rice hull mats with the target densities of 0.10 g/cm3, 0.12 g/cm3, and 0.14 g/cm3 were 7.66 dB, 10.49 dB, and 14.14 dB, respectively, while those of the 1 cm-thick plywood attached to the back of the rice hulls were 33.34 dB, 36.72 dB, and 38.95 dB, respectively. In conclusion, a rice hull mat could be used as acoustic construction materials because of its high sound absorption coefficient and sound transmission loss. © 2019, Korean Society of Wood Science Technology. All rights reserved.
引用
收藏
页码:290 / 298
页数:8
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