Bending hysteresis of plain woven fabrics in various directions

Many researchers have studied the bending rigidity of woven fabrics in vari ous directions, but there have been no reports on anisotropy in bending hys teresis. 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 theoreti cal data with experimental results. The results show that Cooper's model is the most reliable in predicting polar diagrams of bending hysteresis in co tton plain woven fabrics. The results also indicate that the shape of polar diagrams of bending hysteresis along the weft direction spreads outward wi th an increase in the ratio V introduced by Cooper.