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使用粗纤维作为吸声器的应用
Suhaeri Suhaeri1,2, Mohamad Ali Fulazzaky3, Husaini Husaini2
1Postgraduate School of Engineering, Universitas Syiah Kuala, Darussalam, Banda Aceh, 23111, Indonesia.
Heliyon
|April 10, 2024
概括
粗纤维有效地吸收声音. 用穿孔板涂层可提高14%的声音吸收,将降噪系数 (NRC) 从0.23提高到0.39.
科学领域:
- 材料科学 材料科学 材料科学
- 声学工程 声学工程
- 环境科学 环境科学
背景情况:
- 噪音污染对人类的身体和精神健康产生负面影响.
- 自然纤维越来越多地被探索为可持续的吸声材料.
- 粗 (SG) 纤维为减少噪音提供了一个潜在的生物解决方案.
研究的目的:
- 为了评估Scirpus grossus纤维的吸声特性.
- 为了研究穿孔板 (PAS) 涂层对SG纤维声音吸收的影响.
- 确定SG标本的声音吸收系数 (SAC) 和降噪系数 (NRC).
主要方法:
- 准备了20毫米厚度的Scirpus grossus纤维样本.
- 使用典型的基于模型的设计来测量声音吸收.
- 使用MATLAB进行数据分析,以计算SAC和NRC值.
- 未涂层的SG标本与涂上PAS的标本之间的比较.
主要成果:
- 与未涂层样本相比,涂上PAS的SG样本在4000Hz的声音吸收率上有14%的改善.
- 被PAS涂层的SG标本的NRC为0.39 (39%的声音吸收),而未涂层的标本的NRC为0.23 (23%的声音吸收).
- 吸声类从未涂层的SG的E提高到PAS涂层的SG的D.
结论:
- 粗纤维 (Scirpus grossus) 纤维,特别是涂上PAS时,显示出作为有效的吸声器的巨大潜力.
- 该PAS涂层增强了SG纤维的声学性能,导致优越的降噪能力.
- 这些发现支持SG纤维在声学处理中的未来应用,以改善环境福祉.
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