Abstract
A theory of fabric extension in bias direction was developed to obtain apparent shear modulus of fabrics by uniaxial tensile test, and the experimental condition was shown. An experimental method to extend a fabric loop with support rods was employed to meet the measurement theory. The applicability and the error of the experiment method was examined. The shearing force-strain curve can be obtained from tensile force-strain curve measured by the tensile test of a fabric in bias direction, and the shearing modulus can be obtained from inclination of the curve. The shearing force-strain curve obtained by the tensile test was compared with that by commercial shearing tester. Though the shearing force in the tensile test shows a slightly large value than that in the shearing test, obtained data agree each other in small range of strain. The shearing modulus obtained by both methods also agreed for most samples in strain range of 5% well. Thus, the quantitative effectiveness of the measurement of shearing modulus of fabrics by uniaxial tensile test was obtained.
