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NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR) >
NISCAIR PUBLICATIONS >
Research Journals >
Indian Journal of Fibre & Textile Research (IJFTR) >
IJFTR Vol.35 [2010] >
IJFTR Vol.35(3) [September 2010] >
| Title: | Sound reduction by needle-punched nonwoven fabrics |
| Authors: | Sengupta, Surajit |
| Keywords: | Blended fabric
Jute
Needle-punched nonwoven
Polypropylene
Sound reduction |
| Issue Date: | Sep-2010 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Effect of area density, fabric type, source intensity, number of layers,
distance of fabric from sound source, distance of fabric from the receiver and
fibre type on sound reduction of various needle-punched nonwoven fabrics has
been studied in an indigenously fabricated equipment. Nonwoven fabric shows
higher sound reduction than the woven fabric. Jute-polypropylene (1:1) blend
shows maximum sound reduction among jute, polypropylene, polyester and other
jute-polypropylene blend (3:1 and 1:3) samples. Higher area density is
responsible for higher sound reduction and there is a negative correlation
between area density or bulk density of needle-punched nonwoven and
sound reduction. With the increase in number of layers of nonwoven fabric, the
sound reduction through the fabric increases initially but after the maximum it
remains almost unaltered. Sound reduction also increases as the distance
between the fabric and the sound source increases, and the source decibel
decreases. |
| Page(s): | 237-242 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-1025 (Online); 0971-0426 (Print) |
| Source: | IJFTR Vol.35(3) [September 2010]
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