The purpose of this article is to estimate the magnetic field dependent critical current density scaling relation of NbTi used in a superconducting wire. The estimation problem is set using a finite element method based forward model solving the critical current of a wire in external magnetic fields. A sensitivity analysis is carried out to reveal the uncertainties in the process. It is shown that the methods provide accurate predictions of critical currents in a wire, but there are uncertainties related to the zero-field critical current density of the material.

中文翻译：

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基于有限元法的 NbTi 临界电流密度估计

本文的目的是估计超导线材中使用的 NbTi 与磁场相关的临界电流密度比例关系。估计问题是使用基于有限元方法的正向模型设置的，该模型求解外部磁场中导线的临界电流。进行敏感性分析以揭示过程中的不确定性。结果表明，这些方法可以准确预测导线中的临界电流，但存在与材料的零场临界电流密度相关的不确定性。