Purpose

One of the recent applications of fabrics is to use them for sound insulation. Accordingly, due to their low production cost and low relative density, fabrics have drawn attention in some of the industries such as the automotive and aircraft industries. The present study is aimed to investigate the effects of the fiber cross-section, porosity, thickness of samples and fuzzing of the knitted fabric on the sound absorption coefficient.

Design/methodology/approach

In the present study, fabrics with three different stitch densities were knitted by yarns consist of three different forms of fiber cross-section shapes (circular, elliptical and plus-shaped). In this work, the sound absorption coefficient of knitted fabrics was investigated with regard to the different fiber cross-sections and structural parameters using an impedance tube.

Findings

As indicated by the obtained results, the cross-section, porosity, thickness and mass per unit area of the fabrics were the determinant factors for the sound absorption coefficient. In addition to, the sound absorption coefficient and porosity were shown to have an inverse relationship.

Originality/value

A section of the present paper has been allocated to the investigation of the effect of the fiber cross-section and fuzzing of fabric on the sound absorption of plain knitted fabrics.

中文翻译：

---

纬编针织物的吸声：纤维截面形状、针迹密度和表面机械改性的影响

目的

织物最近的应用之一是将它们用于隔音。因此，由于其低生产成本和低相对密度，织物在一些行业如汽车和飞机行业引起了人们的关注。本研究旨在研究纤维横截面、孔隙率、样品厚度和针织物起毛对吸声系数的影响。

设计/方法/方法

在本研究中，具有三种不同针迹密度的织物由三种不同形式的纤维横截面形状（圆形、椭圆形和加号形）组成的纱线编织而成。在这项工作中，使用阻抗管根据不同的纤维横截面和结构参数研究了针织织物的吸声系数。

发现

由所得结果表明，织物的横截面、孔隙率、厚度和单位面积质量是吸声系数的决定因素。此外，吸声系数与孔隙率呈反比关系。

原创性/价值

本文的一部分已分配用于研究织物的纤维横截面和起毛对平纹针织物吸声的影响。