Devolopment of sound absorption properties of multi-layer woven fabrics for indoor textiles

In this study, the effect of multi-layer woven fabrics for interior textiles on sound absorption behavior was investigated by using new methods and new materials in order to improve the sound absorption behavior. First of all, two-layer woven fabrics were produced using yarns with different fiber diameters and different weaves, and raising mechanical finishing was applied in different passages in order to increase the fibrous and porous structure of the fabrics produced. When the effect of the number of passages on the sound absorption behavior was examined, it was determined that the number of two passages was the optimum level. It has been determined that the effective sound absorption range changes from low frequency to high frequency region with the raising process. In the second part of the study, in order to transform the compact fibers into a more voluminous and homogeneous fibrous porous structure, chenille yarns which have different pile lengths, different fiber cross-sections and different fiber diameters are used for single-ply, two-ply, three-ply plain and basket weave fabrics. In general, it has been determined that as the chenille pile length increases and the fiber diameter decreases, the sound absorption property increases. The best sound absorption was obtained in the bicomponent 72 filament 16 segmented pie cross-section fabric. This was followed by a circular cross-section with 600 filaments. When the cross-sections with the same fiber diameter are compared, the best sound absorption performance is listed as channel, hollow, polygonal and circular cross-section. When the weaves are compared, the sound absorption values of plain fabrics at low frequency and basket weave fabrics at high frequencies are higher. When the number of fabric layers is compared, as the number of layers increases, the effective sound absorption range is seen at low frequencies due to the resonance type behavior.