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

被引：3
作者：
Wang, Jun [1 ,2 ]
Zhang, Xingyi [1 ,2 ]
Zhou, Jun [1 ,2 ]
Zhou, Youhe [1 ,2 ]
机构：
[1] Lanzhou Univ, Minist Educ China, Key Lab Mech Disaster & Environm Western China, Lanzhou 730000, Gansu, Peoples R China
[2] Lanzhou Univ, Coll Civil Engn & Mech, Dept Mech & Engn Sci, Lanzhou 730000, Gansu, Peoples R China
来源：
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM | 2014年 / 27卷 / 10期
关键词：
YBa2Cu3O7-x coated conductors; Fatigue; Nonuniform current distribution;
D O I：
10.1007/s10948-014-2614-0
中图分类号：
O59 [应用物理学];
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.
引用
收藏
页码：2283 / 2288
页数：6
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