MODELLING THE BREAKING PROCESS OF TWISTED FIBRE BUNDLES AND YARNS

Abstract

A brief description of a statistical modelling method is given to predict the total loading and breaking process of fibre bundles generated by the tensile test. Relationships between some normalized strength properties and the twist parameter of bundle, as well as the influence of the elastic part of the twist are examined by using the results of modelling an idealized structure of twisted fibre bundle. As an experimental study ring-spun and rotor-spun yarns are tested and their structure is analysed with the aid of comparing the measured and modelled breaking processes.