METHOD FOR DETERMINATION OF KINETICS OF DEGRADATION OF MATERIAL UNDER CONDITIONS OF OPERATION BY DEFECT OF ELASTICITY MODULUS

摘要

A method for determination of kinetics of degradation of material under conditions of operation by defect of elasticity modulus at which one determines the value of elasticity modulus before and after operating time, with calculation of the defect of elasticity modulus as difference between the initial value of elasticity modulus and the value of the elasticity modulus after operating time, with evaluation of the level of degradation of material by the ratio of the defect of the modulus to initial value of elasticity modulus and with determination of kinetics of degradation of material, at that one additionally at operating time determines current values of elasticity modulus and by the ratios of the defects of the modulus determined to respective current values of elasticity modulus one evaluates the current levels of degradation of material, then one evaluates the level of degradation of material after operating time till calculated time by defect of the modulus of residual effect D, i.e. after operating time, this is determined by formulaD=E/E=[(E-E)/E]×100 % as the ratio of the defect of elasticity modulus E to its current value E, this is taken as measure of defectiveness of material and, through comparison of the value of current levels of degradation of material to each other and to the level of degradation of material at coming to calculated term of operation one determines kinetics of degradation of material during the whole period of operation.