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A study of Acoustics Performance on Natural Fibre Composite

机译：天然纤维复合材料声学性能研究

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Natural fibres are fibre that can be directly obtained from an animal, mineral, or vegetable sources. Recently natural materials are becoming good alternatives for synthetic material as they provide good health to greener environment. The purpose of this study is to investigate and compare the acoustic characteristics of natural fibres; Kenaf fibre, Ijuk fibre, coconut coir and palm Oil frond. During the processing stage, each fibre is reinforced with 60:40 weight ratio of natural rubber (NR) separately. The fibres are then compressed after the natural rubber (NR) treatment into circular samples, of 28 mm and 100 mm diameters respectively. The thickness of each sample is fixed at 50mm. The acoustical performances were evaluated by using an impedance tube instrument. The frequency peak value of Kenaf is obtained in a range of 700 Hz - 800 Hz, while for coconut coir is at 1000 Hz - 1075 Hz frequency range. Palm oil frond gives high frequency at 850 Hz - 1200 Hz. However, Only Ijuk has obtained the highest frequency range of 3200 Hz - 3400 Hz. The results demonstrate that these fibres are a promising light and environment-friendly sound absorption material as they are ready to replace the common synthetic fibre.
机译：天然纤维是可直接从动物，矿物质或植物来源获得的纤维。最近天然材料正在成为合成材料的替代品，因为它们为更健康的环境提供了良好的健康。本研究的目的是研究和比较天然纤维的声学特性; Kenaf纤维，Ijuk纤维，椰子牛和棕榈油叶。在加工阶段，每种纤维用60:40的自然橡胶（NR）分别加强。然后将纤维在天然橡胶（NR）处理后被压缩成28mm和100mm直径的圆形样品。每个样品的厚度固定在50mm。通过使用阻抗管仪器评估声学性能。 kEnaf的频率峰值在700Hz-800Hz的范围内获得，而椰子益官在1000Hz-1075Hz频率范围内。棕榈油叶为850 Hz - 1200 Hz提供高频。但是，只有IJuk获得了3200 Hz - 3400 Hz的最高频率范围。结果表明，这些纤维是一种有前途的光线和环保的吸声材料，因为它们已准备好更换普通的合成纤维。

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