Nonuniform Current Distributions in YBa2Cu3O7−x Coated Conductor Caused by Fatigue Damage with Digital Speckle Correlation Analysis

被引：0
作者：
Jun Wang
Xingyi Zhang
Jun Zhou
Youhe Zhou
机构：
[1] Lanzhou University,Key Laboratory of Mechanics on Disaster and Environment in Western China attached to the Ministry of Education of China
[2] Lanzhou University,Department of Mechanics and Engineering Sciences, College of Civil Engineering and Mechanics
来源：
Journal of Superconductivity and Novel Magnetism | 2014年 / 27卷
关键词：
YBa; Cu; O; coated conductors; Fatigue; Nonuniform current distribution;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Digital speckle correlation method (DSCM) is used to investigate fatigue evolution in the YBa2Cu3O7−x coated conductors (YBCO CCs) at room temperature. Damage analysis based on the DSCM has been performed to detect the damaged areas on the experimental samples. Two important parameters including stiffness variation (E) and dissipated energy per cycle (H) have been calculated for every fatigue test. Moreover, the superconducting specimens are subdivided into five sections with a distance of 1 cm between each of them, and the local critical currents (77 K and self-field) of fatigue and fatigue free are measured. The nonuniform current distributions are observed and can be interpreted qualitatively.
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页码：2283 / 2288
页数：5
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