The Effect of Cyclic Loading on the Wicking Performance of Nylon 6.6 Yarns and Woven Fabrics Used for Outdoor Performance Clothing

The effects of short interval dynamic loading and unloading on yarn and fabric wicking performance were evaluated at different cyclic load ranges using the conventional extension-recovery method on a modified Instron Tensile Tester. This was based on the principle that during use, the constituent yarns in a fabric are continuously stressed and relaxed as the garment shape changes. Results showed that the straining forces generated between the filaments of the yarns resulted in spasmodic pumping of the liquid which was dependent on the yarn and fabric construction, contact between the yarns, volume of liquid in yarns, and duration of the force applied.