METHOD TO ESTIMATE RESISTANCE OF CORROSION FATIGUE OF WELDED JOINTS

摘要

FIELD: measurement equipment.;SUBSTANCE: parameters of an individual fatigue curve are determined on the basis of a single exponential equation, which describes dependence of the number of cycles before damage on maximum stress of the cycle, for conditions of testing on air and in corrosive medium, by difference of which the resistance of corrosion fatigue is estimated. To determine parameters of the individual fatigue curve, dependence is built between the fatigue crack length and number of loading cycles, a rectilinear section of dependence is identified, according to which the number of loading cycles is determined, which correspond to conditions of stable growth of the fatigue crack.;EFFECT: possibility to do comparative analysis of welded joints of different structural composition on the basis of small-sample tests.;5 dwg