Arithmetic of bending property of the fabric based on its actual bending shape

An indirect method is developed to determine the bending property of fabrics based on the actual bending shape of the fabric under gravity after reviewing the existing research on bending behavior and bending test methods of fabrics.By applying least squares polynomial regression and numerical differentiation techniques,the data of actual bending shape of fabric under its own weight are computed and used to construct the moment-curvature,bending stiffness-curvature relationship.This calculation and test method have been validated by experimental observations and correlation with KES test method.