Sound absorption coefficient and sound transmission loss of porous sponge attached corrugated cardboard of noise insulation cover

被引：0

作者：

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

Kim M.K. ^{[2
]}

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

Lee Y.-H. ^{[3
]}

Jang S.-S. ^{[4
]}

机构：

[1] Dept. of Housing Environmental Design, Research Institute of Human Ecology, College of Human Ecology, Jeonbuk Natl. Univ.

[2] Dept of Food Science and Human Nutrition, Research Institute of Human Ecology, College of Human Ecology, Jeonbuk Natl. Univ.

[3] Dept. of Mathematics, College of Natural Science, Jeonbuk Natl. Univ.

[4] Dept. of Biobased Materials, College of Agriculture and Life Sciences, Chungnam Natl. Univ.

来源：

Palpu Chongi Gisul/Journal of Korea Technical Association of the Pulp and Paper Industry | 2020年 / 52卷 / 01期

关键词：

Corrugated cardboard; Porous sponge; Sound absorption coefficient; Sound transmission loss; Transfer function method; Transfer matrix method;

D O I：

10.7584/JKTAPPI.2020.02.52.1.38

中图分类号：

学科分类号：

摘要：

The objective of this study is to estimate the noise control capability of a sound barrier developed using a porous sponge attached to a corrugated cardboard (CC) specifically for household blender (BL). The sound absorption coefficient and transmission loss of a triple tri-wall CC are estimated by the transfer-function and transfer-matrix methods, respectively. The sound pressure levels of the BL, CC-covered BL, and porous sponge attached to the CC-covered BL are estimated using a 1/3-octave sound pressure level meter. The mean sound absorption coefficients of a double-layered 1.5 cm thick CC and 3 cm thick porous sponge attached to a double-layered 1.5 cm thick CC are 0.10 and 0.58, respectively. In the case of the porous sponge attached to the CC-covered BL, the sound absorption coefficient value reached 0.82 in the frequency range 3-4 KHz. The mean sound transmission loss of the CC and porous sponge attached to the CC-covered BL are 50.70 and 64.74 dB, respectively. The sound pressure level of the BL, CC, and porous sponge attached to the CG-covered BL are 82.9, 65.7, and 61.2 dB, respectively. The difference in the sound pressure level between the BL and the porous sponge attached to the CC-covered BL is about 20 dB. The findings from this study can be used in potential applications for using porous sponges attached to a CC-covered BL as a noise insulation cover for household BL. © 2020 Korean Technical Assoc. of the Pulp and Paper Industry. All rights reserved.

引用

页码：38 / 44

页数：6

共 8 条

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