Tensile Behavior of Cut Skeins and Single Threads

A simple theoretical formulation is developed whereby it is possible to predict the load-extension behavior of an ideal bundle of textile strands in terms of the behavior of the components. Further, it is shown that the same theory can be applied in reverse to extract from the load-extension curves of the bundle the following tensile properties of single strands: (a) the extensibility distribution (b) the average breaking strength. The theory has been applied to single strands and cut skeins of cotton and viscose staple fiber yarns and is shown to be very successful in these cases.