Abstract
In this work, the edge-crack problem is investigated for a long cylindrical high-temperature superconductor (HTS) under electromagnetic force. The distributions of the current density and the magnetic flux density in the cylinder are obtained analytically in the Kim critical state model. And then, based on the finite element method, the stress intensity factors at the crack tip for different magnetic fields and different lengths of the crack are obtained. The results obtained show that the applied field and the length of the edge crack have significant effects on the safety and validity of an HTS.
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