ON-LINE DETECTION METHOD OF DEFECTS AND MECHANICAL STRESSES IN EXTENDED STRUCTURES

摘要

FIELD: measurement equipment.SUBSTANCE: extended structures during their operation, which are made from homogeneous ferromagnetic material and have the profile section of a symmetrical shape, are magnetised so that poles of symmetric magnetic field are formed on the symmetry axis of the profile section throughout the length of an observation object. Assessment of available defects or mechanical stresses in zones of the profile section of the structure is performed as per the change of values of electrical voltages continuously taken from inductive sensors installed in one and the same plane in pairwise symmetrical points of the section at its boundaries at movement of these sensors along the length of the structure profile.EFFECT: possibility of on-line detection of defects and assessment of local stresses in material of extended structures by means of automated mobile hardware.1 dwg