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2023 Vol.55, Issue 4 Preview Page

Research Article

Sound Absorption Capability of Medicine Herb Residues Mat
Eun-Suk Jang1
,
Nam-Ho Lee2†
,
Chun-Won Kang3‡
1Research Institute of Human Ecology, College of Human Ecology, Jeonbuk National University, Jeonju 54896, South Korea, Sambo Scientific Co. Ltd, R&D Center, Seoul 07258, Republic of Korea, Ph.D. Director
2Department of Wood Science & Technology, College of Agriculture & Life Sciences, Jeonbuk National University, Jeonju 54896, Republic of Korea, Professor
3Research Institute of Human Ecology, College of Human Ecology, Jeonbuk National University, Jeonju 54896, Republic of Korea, Professor
†Corresponding author: E-Mail: enamo@jbnu.ac.kr (Address: Department of Wood Science & Technology, College of Agriculture & Life Sciences, Jeonbuk National University, Jeonju 54896, Republic of Korea)
‡Co-corresponding Author: E-Mail: kcwon@jbnu.ac.kr (Address: Research Institute of Human Ecology, College of Human Ecology, Jeonbuk National University, Jeonju 54896, Republic of Korea)
30 August 2023. pp. 12-20
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Abstract

This study investigated the sound-absorbing properties of herbal medicine waste (HMW) as a promising eco-friendly material for sound absorption. The authors examined the sound absorption coefficient by filling impedance tubes with varying heights of HMW (4 cm, 6 cm, 8 cm, and 10 cm). The results revealed that at a filling height of 4 cm, the optimal sound absorption frequency was found to be 1416 Hz, with a sound absorption coefficient of 0.999. Similarly, at a filling height of 12 cm, the optimal sound absorption coefficient was 0.965 at 456 Hz. It was observed that the sound-absorbing performance at lower frequencies improved as the thickness of the sound-absorbing material increased. Based on the standards established in KS F 3503, HMW would receive a sound absorption grade of 0.5M to 0.7M, depending on the filling height. In conclusion, HMW showed excellent potential as a sound-absorbing material, and the results of our testing showed that it can be used as an alternative to synthetic fibers.

Keywords
Herbal medicine wastes
eco-friendly sound-absorbing material
sound absorption coefficient
sound absorption performance
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Information
  • Publisher :Korea Technical Association of The Pulp and Paper Industry
  • Publisher(Ko) :한국펄프종이공학회
  • Journal Title :Journal of Korea TAPPI
  • Journal Title(Ko) :펄프종이기술
  • Volume : 55
  • No :4
  • Pages :12-20
  • Received Date : 2023-06-05
  • Revised Date : 2023-07-29
  • Accepted Date : 2023-07-31
  • DOI :https://doi.org/10.7584/JKTAPPI.2023.8.55.4.12
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