Investigation of Fatigue Behavior of Polyester Filament Woven Fabrics under Cyclic Loading

In this research, the effect of cyclic loading values, stroke value and weft density on the mechanical properties of woven fabrics is investigated. Six different woven fabrics, plain, rib 2/2, twill 1/3, twill 1/7, satin 1/7 and herringbone twill, with three different weft densities, are produced from polyester filament warp and weft yarns. Samples are then subjected to the fatigue test in warp wise and weft wise directions, under two stroke levels and four loading cycle values. The results indicate that, the trend of mechanical properties changes due to cyclic loading is approximately same for all fabrics. Increasing of cyclic loading increases the value of second modulus of fabrics and decreases the value of tensile strain of the samples while the maximum load of samples does not change. Besides, the increasing of fabric weft density raises the measured mechanical properties of all samples. Increasing of stroke value causes the increase in the second modulus and decreasing the tensile strain of fabrics and has no significant effect on the maximum load.