Measurement of residual stresses and thermally induced on a rail.

摘要

A method for determining the residual stress and the thermally-induced stress in a rail, the method comprising measuring the stresses in part of the remote rail railhead in a direction perpendicular to the longitudinal axis of the rail, and in a direction parallel to axis longitudinal, determining from the stress in the perpendicular direction an estimate of the residual stress in the parallel direction and therefore, by comparing the voltage measured in the direction parallel with the estimated in the direction parallel residual voltage, determine the induced voltage thermally.