INFLUENCE OF MAGNETIZING FREQUENCY AND CONSTRUCTION OF PICK-UP COIL ON BARKHAUSEN NOISE

Jozef Paľa – Jan Bydžovský – Peter Švec

   This paper investigates the influence of the magnetizing frequency and different arrangements of a pick-up coil on the Barkhausen noise in samples of plastically deformed low-carbon steel. The strain dependence of root mean square value and power spectrum of the Barkhausen noise is explained in terms of dislocation density. The most suitable value of the magnetizing frequency for the investigated samples and used measuring system was found out experimentally.

Keywords: Barkhausen noise, tensile stress, pick-up coil, magnetizing frequency

[full-paper]