バルクハウゼンノイズのカオスアトラクタによる金属疲労評価

抄録

This paper presents a fatigue evaluation of steel plates based on chaotic attractors of Barkhausen noise. The fatigue and degradation of magnetic materials affect the magnetic domain. Hence these can be evaluated by Barkhausen noise. Barkhausen noise from magnetic materials is a very complicated wave. Thus we need a special evaluation method to use it. The quantitative change of Barkhausen noise after a fatigue stress test can be found by the fractal dimension of the chaotic attractors constructed by the measured Barkhausen noise.