Investigating the effect of raising on the sound absorption behavior of polyester woven fabrics

Abstract

This work presents the results of efforts focused on the development of sound absorptive woven fabrics by the raising process. Four woven fabrics with rib and basket weave patterns were produced for the raising process. Micro-fiber-based polyester weft yarns were used in one set of rib and basket weave fabrics, while weft yarns comprising regular polyester fibers were used in the other set. Fabrics were subjected to dyeing and heat setting prior to the raising process. Fabrics were then passed one to three times through the raising unit in order to obtain fabrics with different voluminous characteristics and different quantities of fiber ends on the fabric surface. The mass per unit area, thickness, air permeability, and sound absorption coefficient of the fabrics were measured and surface images of the fabrics were taken. The solid volume fraction and airflow resistivity of the fabrics decreased significantly after the first and second raising passes. Increasing the number of raising passes up to two passes resulted in higher sound absorption (average increment of 20% at 5 kHz) in the higher frequencies at the expense of that in the lower frequencies. Sound absorption change beyond two passes was insignificant, though. The results demonstrated that raised fabrics having a lower solid volume fraction and airflow resistivity had better acoustical properties in the higher frequency region.

Sound absorption of woven fabrics produced from braid-reinforced polyvinylidene fluoride hollow fiber membranes

“…It was found that the plain fabric had a higher sound absorption than the other weave types. [19][20][21] In this experiment, three kinds of woven fabrics with plain weave, twill weave and satin weave were prepared (Figures 6 (a)-(c)). It can be found that the shape and size of the pore structure in woven fabrics with different fabric textures were obviously varied.…”

Örtme Faktörü Ve Gözenekli̇li̇k Parametreleri̇ni̇n Dokuma Kumaşlarin Ses Yutuculuk Davranişina Etki̇leri̇ni̇n İncelenmesi̇

“…Ses, gözenekli yapıya girdiği zaman, frekansa bağlı olarak, küçük hava hacimlerini gözenekli yapının boşluklarında salınım yaptırır. Bu küçük hava hacimlerinin bir bölümü liflerle temas halinde olduğundan sürtünme kayıpları olur, buda enerji kaybına yol açar (Suvari ve Dulek, 2019).…”

Sound absorption coefficient analysis and verification of weft-knitted spacer fabrics for noise reduction application

“…16,17 Although it is difficult to produce textured surfaces with nonwoven fabrics for an aesthetically pleasing appearance, nonwoven fiber webs are usually draped with woven fabrics for enhanced structural stability. 18 As well, plain weft-knitted fabric is also proposed for applications in sound absorption, while its sound-absorption performance is relatively poor. 19 Considering this case, numerous attempts have been made to improve the sound-absorption ability of knitted fabrics currently.…”