期刊
MATERIALS
卷 10, 期 11, 页码 -出版社
MDPI AG
DOI: 10.3390/ma10111277
关键词
natural material; sound absorption; flow resistance; sheep wool; delany-bazley model
类别
资金
- Ministry of Economy and Competitiveness of Spain [BIA2013-41537-R]
- ERDF funds, within the National RDI Programme focused on the Challenges of Society
In recent years, natural materials are becoming a valid alternative to traditional sound absorbers due to reduced production costs and environmental protection. This paper reports the acoustical characterization of sheep wool. Measurements on normal incidence and diffuse-incidence sound absorption coefficients of different samples are reported. The airflow resistance has also been measured. The results prove that sheep wool has a comparable sound absorption performance to that of mineral wool or recycled polyurethane foam. An empirical model is used to calculate the sound absorption of sheep wool samples. A reasonable agreement on the acoustic absorption of all sheep wool samples is obtained.
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