A relatively complex model is developed to estimate the effect of the electromagnetic force on fracture behavior in a slab superconductor with a center-situated crack, where the viscous flux flow and flux creep have been considered. The effects of the viscous flux flow and flux creep on the stress intensity factors and flux profiles are discussed for the descending field. The results indicate that both viscous flux flow and flux creep should be considered in zero-field cooling (ZFC) process in order to avoid cracking within the superconductor slab, which may be useful to researchers interested in cracking and mechanical failure of superconductors.

中文翻译：

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零磁场冷却后板状超导体在通量蠕变和粘性通量作用下的裂纹问题

建立了一个相对复杂的模型来估计电磁力对具有中心裂纹的平板超导体中的断裂行为的影响，其中已经考虑了粘性磁通流和磁通蠕变。对于下降场，讨论了粘性通量流和通量蠕变对应力强度因子和通量分布的影响。结果表明，在零场冷却（ZFC）过程中应同时考虑粘性磁通量流和磁通量蠕变，以避免超导体板内部出现裂纹，这对于对超导体的裂纹和机械故障感兴趣的研究人员可能有用。