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- Title
Nonuniform Current Distributions in YBaCuO Coated Conductor Caused by Fatigue Damage with Digital Speckle Correlation Analysis.
- Authors
Wang, Jun; Zhang, Xingyi; Zhou, Jun; Zhou, Youhe
- Abstract
Digital speckle correlation method (DSCM) is used to investigate fatigue evolution in the YBaCuO 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.
- Subjects
SPECKLE interference; YTTRIUM barium copper oxide; METAL fatigue; STIFFNESS (Engineering); ENERGY dissipation; NON-uniform motion
- Publication
Journal of Superconductivity & Novel Magnetism, 2014, Vol 27, Issue 10, p2283
- ISSN
1557-1939
- Publication type
Article
- DOI
10.1007/s10948-014-2614-0