INVESTIGATION OF THE EFFECT OF DISTRIBUTION OF THE STATIC STRENGTH ON THE FATIGUE FAILURE OF A LAYERED COMPOSITE BY USING THE MARKOV CHAIN THEORY

An analysis of correlation between the static strength and fatigue life of a layered glass-fiber composite is carried out by using the Markov chain theory. The parameters of the Markov model of fatigue life are connected with parameters of the local static strength of components of a composite. The distribution of the static strength of the composite and the possibilities of description of its fatigue life and static strength by using Markov chains is investigated on the basis of data obtained from static and fatigue tests of specimens made of a composite manufactured from a unidirectional UDO® glass fabric of type E and a polyether resin (HAVELpol.2). A numerical example is presented.