Studies on the sound absorption and transmission loss performances of wood-based, natural and waste materials

Journal Tittle: Acta Mechanica Sinica

Article Tittle: Studies on the sound absorption and transmission loss performances of wood-based, natural and waste materials

Author: Hsiao Mun Lee; Wensheng Luo; Jinlong Xie; Guilin Wen; Heow Pueh Lee

Novelty/impact/significance

1.      Proof that Pterocarpus soyauxii and Quercus spp. (natural woods) are good to be used as sound barrier or blocking materials.

2.      Proof that cork is a good choice for wood-based applications when sound absorption and prevention of sound transmission are needed at the same time.

Scientific question

Acoustical performances of various type of natural and processed woods which commonly used in building constructions were reported.

Key of how

The sound absorption and sound transmission loss performances of 11 types of natural woods and 4 types of processed woods with attachment of various natural or waste materials were investigated in the present study using impedance tube with ASTM standards.

Major points

1. It is found that all natural and all hard processed woods were extremely poor sound absorbers, but were good sound barriers.

2. Among the studied natural or waste materials, filter mat made of coconut fibre was the best material that could be attached to the hard processed woods to significantly improve their sound absorption.

Funding of the work

1. National Natural Science Foundation of China [51908142]

2. Key Program of National Natural Science Foundation of China [11832009]

3. Natural Science Foundation of Guangdong Province [2019A1515012223, 2018A030313878]

Please go to the website to read this article: http://ams.cstam.org.cn/EN/abstract/abstract157404.shtml