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研究了钢的硬度对磁巴克豪森噪声（ＭＢＮ）检测参数的影响规律．得出了一个反映这一规律的经验公式．其系数可用实验数据的线性回归或图解法求得．所得关系对残余应力的定量检测和巴克豪森效应测量有重要意义．
The influence of steel hardness on the detection parameters of magnetic Barkhausen noise (MBN) was studied. Came to an empirical formula reflecting this law. The coefficients can be obtained by linear regression or graphical method of experimental data. The relationship between quantitative detection of residual stress and Barkhausen effect measurement is of great significance.