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Advances in Sound Absorption of the Forest by Product and...
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Advances in Sound Absorption of the Forest by Product and Wood-Based Materials and Its Application

A special issue of Forests (ISSN 1999-4907). This special issue belongs to the section "Wood Science and Forest Products".

Deadline for manuscript submissions: closed (30 December 2023) | Viewed by 6054

Special Issue Editor

Dr. Eunsuk Jang

E-Mail Website
Guest Editor
Research Institute of Human Ecology, College of Human Ecology, Jeonbuk National University, Jeonju 54896, Republic of Korea
Interests: sound-absorbing material; natural sound-absorbing material; forest by product; acoustic properties of wood; wood modification; wood physics

Special Issue Information

Dear Colleagues,

With the continued development of urbanization and industrialization, the time spent indoors has increased. In particular, as indoor activities such as online meetings and online learning have become more common during the COVID-19 pandemic, the acoustic environment of indoor spaces has become a crucial factor. Most sound-absorbing materials in indoor spaces are made of petroleum compounds. Still, as interest in the environment has recently increased, research on sound-absorbing materials using various eco-friendly materials has become more active. As for eco-friendly sound-absorbing materials, agricultural by-products such as rice hull, straw, coconut husk, and corn husk, and forest by-products such as mountain fruit and tree bark have been reviewed in previous studies. In addition, recently, studies on the sound absorption performance of wood cross sections using the porosity of wood have been actively conducted. Therefore, we invite the submission of articles on the topic of the sound absorption performance of natural sound absorption materials, such as forest by-products, wood products, and any natural materials.

Potential topics include, but are not limited to:

  • Natural sound-absorbing material;
  • Sound-absorbing material using forest by-products;
  • Sound-absorbing material using wood and wood materials;
  • Wood modification for permeable pore structure;
  • Future perspectives for natural sound-absorbing material.

Dr. Eunsuk Jang
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Forests is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • natural sound-absorbing material
  • co-friendly sound absorption material
  • forest by products
  • wood modification
  • sound absorption coefficient
  • pore structure of wood
  • wood porosity

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Published Papers (1 paper)

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Review

20 pages, 4987 KiB  
Review
Sound Absorbing Properties of Selected Green Material—A Review
by Eun-Suk Jang
Forests 2023, 14(7), 1366; https://doi.org/10.3390/f14071366 - 3 Jul 2023
Cited by 17 | Viewed by 5698
Abstract
Noise pollution is often overlooked and invisible, but it significantly impacts the quality of human life. One of the most straightforward solutions to mitigate noise pollution is by using sound-absorbing materials. Recently, research trends to develop sound absorbing green materials, typically derived from [...] Read more.
Noise pollution is often overlooked and invisible, but it significantly impacts the quality of human life. One of the most straightforward solutions to mitigate noise pollution is by using sound-absorbing materials. Recently, research trends to develop sound absorbing green materials, typically derived from agricultural by-products, have witnessed an uptick. This paper summarizes the sound-absorbing properties of various green materials found in the literature, including coconut fiber, kenaf fiber, rice bran, rice husk, rice straw, Hanji (a traditional Korean paper), tea-leaf fiber, mandarin peel, pineapple-leaf fiber, corn husk, peanut shell, sugar palm trunk, Yucca gloriosa fiber, fruit stones, wood barks, flax fiber, and nettle fiber. Natural fibers can be made by compressing the raw material or manufacturing them into fibrous materials or composites. The key variables that determine sound absorption performance are the thickness and density of the green material, as well as the presence of an air back cavity. Generally, thicker materials exhibit better sound absorption performance in the low- and mid-frequency range. Moreover, higher density is associated with better sound absorption performance at the same thickness. Additionally, increasing the distance between the sound-absorbing material and the air back cavity enhances sound absorption performance at low frequencies. Thus, these physical variables, rather than the specific materials used, primarily influence sound absorption capabilities. Therefore, various green materials, such as fibers, granules, and porous materials, can be effective sound absorbers if their thickness, density, and air back cavity are properly controlled. Full article
(This article belongs to the Special Issue Advances in Sound Absorption of the Forest by Product and Wood-Based Materials and Its Application)
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