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AC Transport Current Loss Characteristics of REBCO Coated Conductors Subjected to Bending Strains

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3 Author(s)
Tsukamoto, O. ; Yokohama Nat. Univ. ; Kataoka, A.. ; Ohmatsu, K.

We experimentally investigated dependence of AC transport current loss characteristics of HoBCO on bending strains. The losses were compared with the losses in the straight conductors. The measurement results showed that values of the AC losses were affected by the bending strains. However, when the losses and the amplitudes of the transport currents were normalized by the strain dependent critical current, curves of the losses vs. the amplitude of the currents fell into one curve unless superconducting layers of the conductors get damages caused by bending strains. Based on these results, it can be considered that the AC transport current loss characteristics of HoBCO subjected to bending strain can be estimated by knowing values of critical currents of bent conductors and the loss characteristics of straight ones in the range where the bending strains do not damage the superconductor layers

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Applied Superconductivity, IEEE Transactions on  (Volume:16 ,  Issue: 2 )