Tensile Properties of Triaxially Woven Fabrics Under Biaxial Loading

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Abstract
Classical results in the behavior of woven fabrics are extended to the case of fabrics having three planar, nonorthogonal axes of symmetry (triaxial). The biaxial loading analysis due to Grosberg is extended to the loading of triaxial fabrics in the machine and cross-machine directions in an attempt to predict fabric modulus during the crimp removal stage. Preliminary experimental results showing reasonably good agreement with moderately open fabrics are given. In addition, relationships are developed to allow the construction of conventional fabrics which are equivalent to triaxial fabrics in terms of cover factor and intersections or interfacings per unit area.

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