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It is shown experimentally that the geometry (i.e., the loop shape) of weftknitted fabrics is controlled by loop length, fibre type and properties, and method of relaxation. A theoretical study indicates that, for given end conditions, the shape taken up by a deformed elastic rod depends on the ratio of its flexural and torsional rigidities. The result is used to provide a tentative explanation of the experimental results.

This paper describes an attempt at a theoretical study of large-scale tensile defor mation of plain woven fabrics. The basis of the investigation is to use a more realistic approximation of nonlinear yarn bending behavior for both the undeformed fabric state and the stress analysis than has been used by most previous workers. A theoretical model is proposed for the load-extension behavior of plain woven fabric during the first cycle of loading and unloading. In order to demonstrate the possibility of extending this to include cyclic behavior, a theoretical analysis of load-extension behavior over several cycles of loading and unloading is developed.

By G. A. V. LEAF and AIDA M. F. SHETA I 'A theoretical expression for the initial shear modulus of a plain-woven fabric is derived and is then compared with the moduli of a range of woven fabrics.