Abstract
In the earlier part of the series (Jeddi et al., 2003) the authors defined a new index for the structural asperity of woven fabrics and found the relationship between this index and fabric frictional parameters. In this part, the authors develop this definition for weft knitted fabrics and introduce a ‘Fabric Structural Asperity Index’ (FSAI) for interlock gating of knitted structures. This index, which can be explained as the ratio of miss stitches to the total number of needles in a structural knit cell, shows a good relation with frictional resistance parameters of the course over course direction of motion. The experimental results show that the static and dynamic frictional resistances of the course over course motion are higher than the wale over wale motion. The values of frictional forces for different structures have no statistical difference in the wale over wale direction of motion. This paper also studies the effectiveness of the structural cell stitch length and fiber content on the frictional behavior of the fabrics.
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