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首页> 外文期刊>The Journal of the Textile Institute >Effects of total surface area and fabric density on the acoustical behavior of traditional thermal-bonded highloft nonwoven fabrics
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Effects of total surface area and fabric density on the acoustical behavior of traditional thermal-bonded highloft nonwoven fabrics

机译：总表面积和织物密度对传统热粘合高蓬松无纺布声学性能的影响

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摘要

Nonwoven fabrics are ideal materials for use in acoustical insulation products because they have a high total surface area, which is directly related to the denier and cross-sectional shape of the fiber. The smaller the denier, the more fibers for the same material density, the higher the total fiber surface area is. This results in a greater opportunity for interaction between the sound wave and the fibers in the structure. Another important parameter is the density of the nonwoven material, which affects the geometry and the volume of the voids in the structure. The acoustical properties of fabric materials are measured using one of two methods: the impedance tube method and the reverberation room test method. The impedance tube method uses very small test samples (5-15 cm), whereas the reverberation room test method requires large test samples and is expensive to set up. For making comparative analysis of the test samples and overcoming the disadvantages of the current test methods, a direct comparative acoustical properties measurement device has been developed and fabricated in the School of Materials Science and Engineering at Clemson University in an attempt to overcome some of the disadvantages of the other method.
机译：非织造织物是用于隔音材料的理想材料，因为它们具有高的总表面积，这与纤维的旦尼尔和横截面形状直接相关。旦数越小，相同材料密度的纤维越多，总纤维表面积就越大。这导致声波与结构中的纤维之间相互作用的机会更大。另一个重要参数是非织造材料的密度，该密度会影响结构中的几何形状和空隙的体积。织物材料的声学特性是使用以下两种方法之一测量的：阻抗管法和混响室测试法。阻抗管方法使用非常小的测试样本（5-15厘米），而混响室测试方法则需要大量的测试样本，并且安装成本很高。为了对测试样品进行比较分析并克服当前测试方法的缺点，克莱姆森大学材料科学与工程学院开发并制造了一种直接比较的声学性能测量装置，以克服某些缺点。另一种方法。

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