Sound absorption rate and sound transmission loss of wood bark particle

被引：3

作者：

Kang C.-W. ^{[1
]}

Jang E.-S. ^{[1
]}

Jang S.-S. ^{[2
]}

Kang H.-Y. ^{[2
]}

Kang S.-G. ^{[2
]}

Oh S.-C. ^{[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 Forest Products, College of Agriculture & Life Sciences, Chungnam National University, Daejeon

[3] Department of Forest Biomaterials Engineering, College of Agriculture, Daegu University, Daegu

来源：

Journal of the Korean Wood Science and Technology | 2019年 / 47卷 / 04期

关键词：

Apparent density; Sound absorption coefficient; Sound transmission loss; Thickness; Transfer function method; Transfer matrix method; Wood bark particle;

D O I：

10.5658/WOOD.2019.47.4.425

中图分类号：

学科分类号：

摘要：

In this study, sound absorption capability and sound transmission loss of several kinds of target densities and thickness for six species of wood bark particle were estimated by the transfer function and transfer matrix methods. Resultantly, the mean sound absorption coefficient of a 100-mm thick Hinoki wood bark particle mat was 0.90 in the frequency range of 100-6400 Hz, whereas the mean sound absorption rate of a 50-mm thick Hinoki wood bark particle mat was 0.84 in the same frequency range. Particularly, at a thickness of 100 mm, it reached almost up to 100% in the frequency range of 1 KHz. The sound transmission losses of 100-mm thick Hinoki wood bark particle mat with a target density of 0.16 at 500 and 1000 Hz were 15.30 and 15.73 dB, respectively. When a 10-mm thick plywood was attached to the back of the wood particle mat, the sound transmission losses was increased by 20-30 dB. Wood bark can be used as an acoustical material owing to its high sound absorption rate and transmission loss. © 2019, Korean Society of Wood Science Technology. All rights reserved.

引用

页码：425 / 441

页数：16

共 16 条

[1]

Anderson A.-B., Wong A., Wu K.-T., Utilization of white fir bark in particleboard, Forest Products Journal, 24, 7, pp. 40-45, (1974)

[2]

Standard Test Method for Measurement of Normal Incidence Sound Transmission of Acoustical Materials Based on the Transfer Matrix Method

[3]

Hwang S.-M., Kim J.-D., Kwon H., Seo Y.-S., Sound Transmission Loss through Double Walls, International Journal of Naval Architecture and Ocean Engineering, 50, 2, pp. 64-68, (2013)

[4]

Acoustics-Determination of Sound Ab- Sorption Coefficient and Impedance in Impedance Tubes-Part 2: Transfer Function Method

[5]

Jang E.-S., Kang C.-W., Kang H.-Y., Jang S.-S., Sound absorption property of traditional Korean Natural Wallpaper (Hanji), Journal of the Korean Wood Science and Technology, 46, 6, pp. 703-712, (2018)

[6]

Kang C.-W., Jang E.-S., Jang S.-S., Kang H.-Y., Comparison of transfer function method and reverberation room method in measuring the sound absorption coefficient of rice straw particle mat, Journal of the Korean Wood Science and Technology, 46, 4, pp. 362-367, (2018)

[7]

Kang C.-W., Jang E.-S., Jang S.-S., Kang H.-Y., Measurement of sound transmission loss in a sound barrier filled with the rice-straw particles by the transfer function and laboratory measurement methods, Journal of the Korean Wood Science and Technology, 46, 4, pp. 338-345, (2018)

[8]

Kang C.-W., Lee N.-H., Jang E.-S., Jang S.-S., Kang H.-Y., Sound absorption coefficient and sound transmission loss of rice hull mat, Journal of the Korean Wood Science and Technology, 47, 3, pp. 290-298, (2019)

[9]

Kim C.-W., Chang T.-C., Kim D.-S., Characteristics analysis of highway traffic noise, Transactions of the Korean Society of Noise and Vibration Engineering, 22, 12, pp. 1191-1198, (2012)

[10]

Kim B.-R., Lee J.-Y., Studies on utilization of bark by carbonization, Journal of the Korean Wood Science and Technology, 34, 1, pp. 40-51, (2006)

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