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Probe characterisation and simulation of conductivity

机译：探针表征和电导率模拟

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The sensitivity to defects and other parameters of control can be improved bythe optimal choice of the probe.It appears, after study of the different types of probes (ferritic, sweetsteel, insulator) with different geometry (dish, conical,.. ), necessary tounderline that the success of a research of feasibility depends largely on thegood definition of measure collectors, such sort that they are adapted to theconsidered problem.The Eddy Current NDT simulation can be resolve the material characterizationproblems. The principal rules of simulation is to explain the physicalphenomena between the power source and the material testing.The second approach is to determinate material conductivity simulation by usingthe diagram impedance and a different variables parameters (Frequency, factorK,....).The testing probe realization by eddy currents was satisfactory at the sight ofcontrol and testing results of coating samples. The fundamental parameters tokeep in mind for a probe construction are To diminish the reluctance of themeasure circuit.To allow an exchange between the probe and the material to be tested optimalenergy.A magnetic probe shell be realized in a material of a high magneticpermeability and a low electric conductivityThe results obtained by the probe whose nucleus and coil are conic allows toconclude that Sensibility increases with this geometry.The resulting field at the contact point with the material to be tested can beassimiled to a material point.The influence of the lateral field is considerably minimized.The results obtained by simulation on the material are conform with practicemeasure.The simulation application is valuable only for non magnetic material.
机译：可以通过以下方法提高对缺陷和其他控制参数的敏感性： 探头的最佳选择。 经过研究不同类型的探针（铁素体，甜味 钢，绝缘体）具有不同的几何形状（碟形，圆锥形，..），对于 强调可行性研究的成功在很大程度上取决于 度量收集器的良好定义，以使其适合于 考虑的问题。 涡流无损检测模拟可解决材料表征 问题。模拟的主要规则是解释物理 电源和材料测试之间的现象。 第二种方法是通过使用 图的阻抗和不同的变量参数（频率，因数 K，...。）。 在眼前，通过涡流实现的测试探头是令人满意的 涂料样品的控制和测试结果。基本参数 记住要进行探针构造，以减少对探针的不情愿。 测量电路。 为了使探头和被测材料之间的交换达到最佳 活力。 磁性探针壳由高磁性材料实现 渗透性和低电导率 通过其核和线圈呈圆锥形的探针获得的结果可以 结论是，灵敏度随着这种几何形状的增加而增加。 与被测材料的接触点处的结果场可以为 被同化为实质。 横向场的影响被大大地减小了。 通过对材料的仿真得到的结果与实际相符 措施。 该模拟应用仅对非磁性材料有价值。

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