Investigation of effective factors of woven structure fabrics for acoustic absorption

Abstract

Textiles have been used as noise reduction materials in construction, automotive and other industries for its performance of porous, light and easy processing, but few studies have been done on the sound absorption properties of woven fabrics. In this study, effect of structural factors of woven fabrics on acoustic absorption was investigated. Fabrics with plain, twill and honeycomb weave were weaved with identical warp density and employed as the samples for acoustical measurement, which were measured with acoustical detecting platform based on impedance tube. A novel date processing method was constructed to evaluate the acoustic absorption performance of the woven fabrics. The results show that there is no significant correlation of fabric sound absorption performance with fabric thickness, surface density and porosity. This indicated that the mechanism of acoustic absorption of woven fabrics may dissimilar with the one in other kind of fiber aggregates, such as felts and nonwovens. Although pore characteristics are important factors affecting the acoustic properties of woven fabrics, the effect of pore characteristics on acoustic absorption of textiles cannot be simple attributed to porosity. The size and shape of the pores may also play an important part on sound absorption performance of woven fabrics.