Abstract
In this paper the measured air resistance of single jersey fabrics made from acrylic yarns is investigated. A mathematical approach on a geometrical model is attempted to relate the fabric porosity to yarn diameter and wale and course spacing. An empirical equation is fitted to the measured air resistance data using multiple regression analysis. The regression equation relates the air resistance to the fabric parameters of tightness factor, porosity and bulk density. This empirical relationship is shown to predict the air resistance accurately.
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