method for non-destructive measuring of magnetic properties of a prüfkörpers and device for non-destructive measurement of magnetic properties of a prüfkörpers

摘要

in a method and a device for determining the koerzitivfeldstu00e4rke and the maximum slope of the hysteresekurve in aufsetztechnik is a test piece in a magnetic field with a signal fed erregerspule magnetized.by the hysteresekurve of pru00fcfku00f6rpers with frequency of the alternating current durchgesteuert several times and by the erregerspule tangentialfeldstu00e4rke generated on the pru00fcfku00f6rperoberflu00e4che with the aid of a magnetfeldstu00e4rkesensors during the durchsteuerung the hysteresekurve continuously he summarizes.a oberwellenanalyse the time course of the tangentialfeldstu00e4rke within a period, a distortion factor to determine the maximum slope of the hysteresekurve calculated.the koerzitivfeldstu00e4rke is determined by the time of the first nulldurchgangs of oberwellensignals after the passage through zero of the tangentialfeldstu00e4rkesignals is sought, and at this time, the amplitude of the tangentialfeldstu00e4rkesignals as a measure for the koerzitivfeldstu00e4 rke is considered.