Bulletin of
Vitebsk State
Technological
University

abstract

The most important mechanical properties of fibers are their tensile properties under forces and deformations applied along the fiber axis. Of these,the simplest to study experimentally is the elongation and finally the break.

The behaviour of an individual fiber under a gradually increasing applied force is completely expressed by the load–elongation curve with its endpoint breakage. An advantage of a bundle test is that it takes account of variability, which influences on yarn strength.

As a result of the analytical researches imitating model of extension and break of the fiber bundle was developed. It was found that the coefficient of variation of elongation at breaking affects on the form of the diagram of extension of the fiber bundle.

Simulation of extension and break of the fiber bundle