الفهرس 
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Abstract
This work introduced how to evaluate yarn knittability on knitting machines. This is achieved by measuring the required formation force and relates between it and used yarn properties to guide fabric producers technically. By measuring electrical driving torque required to operate the circular knitting machine and by measuring the required force for carriage movement on flat knitting machine, it was possible to relate among yarn count, twist factor, waxing process and yarn formability without major defects.
And for predicting knitted fabrics actual properties, one of the mathematical model assumptions was modified to obtain more realistic results close to the experimental results. In addition, theoretical prediction is carried out for weight and thickness.
Results revealed the effect of both relative yarn diameter to machine gauge and waxing on electrical driving torque required to operate cotton yarns. And the effect of number of twists per meter in plied yarn and stitch length on force required to formation acrylic yarns by overcoming frictional forces.