A METHOD TO EVALUATE TORSIONAL PROPERTIES IN HIGH CARBON STEEL WIRES BY EDDY CURRENT MEASUREMENTS

摘要

The present invention relates to a method to evaluate torsional properties in high carbon steel by eddy current measurements comprising taking a plurality of samples of high carbon steel wire rods having known torsional no.; testing torsion no. of the samples according to IS specification No:1717:1985 by eddy current output voltage; measuring the eddy current output voltage of the samples of known torsional value; preparing a standard graph of eddy current outflow voltage VS known torsion value; testing eddy current outflow voltage of a new sample (unknown torisonal value); and comparing the eddy current outflow voltage with standard graph (eddy current outflow voltage vs torsional no.) to find out the torsional value of unknown samples.[IN-KOL-2009-00558A]