Bending hysteresis of plain woven fabrics in various directions

Many researchers have studied the bending rigidity of woven fabrics in various directions, but there have been no reports on anisotropy in bending hysteresis. In this work, existing models for predicting the bending rigidity of woven fabrics are applied to bending hysteresis in various directions. A wide range of cotton plain woven fabrics is examined by comparing theoretical data with experimental results. The results show that Cooper's model is the most reliable in predicting polar diagrams of bending hysteresis in cotton plain woven fabrics. The results also indicate that the shape of polar diagrams of bending hysteresis along the weft direction spreads outward with an increase in the ratio V introduced by Cooper.