According to classical methods, the bending character of woven fabrics has been expressed by only one term such as bending length, flexural rigidity etc.In 1964, Livesey and Owen invented a simple instrument by which the bending hysteresis can be determined manually.Thereafter, several automatic bending hysteresis testers have been manufactured.
The development of measuring the bending hysteresis makes it easy to analyze the bending mechanism.In this report, the theoretical studies by Livesey-Owen and Grosberg are explained and author's theory is briefly reviewed.
The difference in the bending hysteresis between cotton and viscose fabric, wool and synthetic fabric, silk and synthetic fabric, are experimentally shown and discussed.The experimental data showing the effect of single filament denier and yarn density on the bending hysteresis, the variations in the bending hysteresis by various finishing treatments are also presented and explained by author's theory.