Stress evaluation of steel plates by chaos of Barkhausen noise

This paper presents a tensile stress evaluation of steel plates by chaos of Barkhansen noise. The stress of magnetic materials affects magnetic domains, so the amount of the stress can be evaluated by Barkhansen noise. Barkhausen noise is a very complicated signal, so a special evaluation method is needed to use it. The quantitative change of Barkhausen noise after a tensile stress test can be found by the fractal dimension of the chaotic attractors constructed by the measured Barkhansen noise. Index Terms--Barkhausen noise, chaos, fractal dimension, tensile stress.