19-08-2014, 11:17 AM
Evaluation of various textile materials as sound barriers/sound absorbers has been carried out in our laboratory. These project discuses in a continuation of the research work done in this field. 16 different cotton and 10 different polyester plain woven fabrics have been used for testing. Cotton plain woven fabrics having different construction like count (20s, 24s), TM (3.6, 4), PPI (52, 60) and yarn type (ring and rotor). PET plain woven fabrics of different constructions were weaved by changing parameters like count & PPI were used.
Evaluation of various textile materials as sound barriers/sound absorbers has been carried out in our laboratory. These project discuses in a continuation of the research work done in this field. 16 different cotton and 10 different polyester plain woven fabrics have been used for testing. Cotton plain woven fabrics having different construction like count (20s, 24s), TM (3.6, 4), PPI (52, 60) and yarn type (ring and rotor). PET plain woven fabrics of different constructions were weaved by changing parameters like count & PPI were used.
This enabled us it study the effect of fabric geometry on sound absorbance. The literature reports measurement of sound absorption by reduction and reflection methods and the technique used makes use of a PVC tube with a diameter 10cm and length 100cm. In reflection method, the incident angle of the sound wave on the fabric surface has been varied from 300 to 600. The reflected sound wave was measured at the reflection angle equal to the incident angle using the basis of physics, that the angle of incidence (AI) = angle of reflection (AR). 16 Plain woven cotton fabrics having different constructions were subjected to different wet processing steps like. Desizing, Scouring Bleaching, Mercerizing, OBAtreatment, Dyeing, and Resin finishing. These fabrics were then subjected for measurement of sound absorbance and the results are correlated with the type of processing in addition on to the construction parameters.