Del Rey Romina, Uris Antonio, Alba Jesús, Candelas Pilar
Centro de Tecnologías Físicas, Universitat Politècnica de València, EPS Gandia, C/Paraninf, 1, 46730 Grao de Gandia, Valencia, Spain.
Centro de Tecnologías Físicas, Universitat Politècnica de Valencia, Camino de Vera s/n, 46022 Valencia, Spain.
Materials (Basel). 2017 Nov 7;10(11):1277. doi: 10.3390/ma10111277.
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.
近年来，由于生产成本降低和环保因素，天然材料正成为传统吸声器的有效替代品。本文报道了羊毛的声学特性。报告了对不同样品的垂直入射和漫入射吸声系数的测量结果。还测量了气流阻力。结果证明，羊毛具有与矿棉或再生聚氨酯泡沫相当的吸声性能。使用一个经验模型来计算羊毛样品的吸声情况。得到了所有羊毛样品吸声情况的合理一致性结果。
