Differential permeability behaviour of P9 and T22 power station Steels
Differential permeability behaviour of P9 and T22 power station Steels
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DOI：
10.1016/j.jmmm.2013.09.059
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发表时间：
2014-02-01
影响因子：
2.7
通讯作者：
Davis, C. L.
中科院分区：
文献类型：
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作者：
Karimian, N.;Wilson, J. W.;Davis, C. L.
使用非接触式磁传感器测量的发电站钢的电磁（EM）特性的分析具有重要意义，因为这些特性指示材料的微观结构，并且可以潜在地用于非破坏性休息。在本文中，我们提出了EM测量的圆柱形电站钢样品（P9和T22级）具有不同的微观结构：正常化和回火（代表的初始条件），正常化和服务后的曝光。为了获得这些样品的磁性能，测量了这些样品的B-H曲线。圆柱形空心和印刷电路板（PCB）线圈集成传感器被用来测量增量磁导率。采用分析和数值方法（有限元法）来计算这些样品的传感器响应。通过将有限元模型与测量结果拟合，推断了不同钢的电磁性能。此外，还进行了灵敏度和误差分析，以评价该方法的准确性. (C)© 2013 Elsevier B. V.版权所有
Analysis of the electromagnetic (EM) properties of power station steels, measured using a non contact magnetic sensor, is of significance as such properties are indicative of the microstructure of the material and can be potentially exploited for non-destructive resting. In this paper, we present EM measurements of cylindrical power station steel samples (P9 and T22 grades) with different microstructures: normalised and tempered (representative of the initial condition), as normalised and after service exposure. In order to obtain the magnetic properties the B-H curves of these samples were measured. Cylindrical air-cored and printed circuit board (PCB) coil integrated sensors were used to measure the incremental permeability. Analytical and numerical methods (Finite Elements Methods) were employed to calculate the sensor response of these samples. The electromagnetic properties of the different steels were inferred by fitting the finite element models to the measured results. In addition, sensitivity and error analysis were carried out to evaluate the accuracy or the method. (C) 2013 Elsevier B.V. All rights reserved