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NISCAIR PUBLICATIONS >
Research Journals >
Indian Journal of Fibre & Textile Research (IJFTR) >
IJFTR Vol.34 [2009] >
IJFTR Vol.34(3) [September 2009] >
| Title: | Determination of woven fabric impact permeability index |
| Authors: | Tokarska, M
Gniotek, K |
| Keywords: | Air permeability
Impact permeability index
Uncertainty
Woven fabric |
| Issue Date: | Sep-2009 |
| Publisher: | CSIR |
| Abstract: | An
uncertainty in measuring a feature of technical fabrics called ‘impact
permeability’ has been assessed in the form of impact permeability index.
Impact permeability describes the difference in the behaviour of a fabric in
dynamic airflow conditions in relation to its behaviour in static conditions. A
mathematical model of pressure drop in woven fabric, which is formed as a
result of impact airflow through the product, has been presented. For the
assessment of inaccuracy in impact permeability index determination, the
procedures described in ‘guide to the expression of uncertainty in measurement’
are used. An example of calculating uncertainty budgets of the parameters
analysed has also been reported. It is observed that the method of determination
of impact permeability index is useful. The index is a good measure of impact
permeability for the technical fabrics with respect to their flow properties |
| Page(s): | 239-244 |
| ISSN: | 0975-1025 (Online); 0971-0426 (Print) |
| Source: | IJFTR Vol.34(3) [September 2009]
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