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- Title
Measurement of Nonuniform Strain Distribution in CORC Cable Due to Bending Process by a Segmentation-Aided Stereo Digital Image Correlation.
- Authors
Li, Y.; Wei, L.; Zhang, X.
- Abstract
Background: Conductor on Round Core (CORC) superconducting cable is made of YBa2Cu3O7-x(YBCO) superconducting tape wound along a copper core and used for wind superconducting magnets. Bending deformation is the main deformation mode during the winding process, which also caused the degradation of CORC cable superconducting performances. Objective: To directly measure the deformation characteristics of CORC cable during bending processes and reveal the origin of performance degradation. Methods: Based on the stereo-digital image correlation (stereo-DIC) method, a segmentation-aided stereo-digital image correlation (SA-Stereo-DIC) method has been proposed to optimize the results near the tape edge. Meanwhile, a binocular stereo DIC system has been established to enable accurate panoramic measurements of large deformations with high magnification by scanning the samples. Results: Deformation characteristics of CORC cable can be obtained, which in turn reveal the causes of performance degradation of CORC cable during bending processes. Conclusions: On the one hand, it effectively extends the use of the conventional stereo-DIC method, on the other hand, it lays the foundation for the subsequent optimization of the design during the application of CORC cable.
- Subjects
DIGITAL image correlation; STEREO image; SUPERCONDUCTING cables; DIGITAL images; SUPERCONDUCTING magnets; CABLES; STEREOPHONIC sound systems
- Publication
Experimental Mechanics, 2023, Vol 63, Issue 5, p813
- ISSN
0014-4851
- Publication type
Article
- DOI
10.1007/s11340-023-00953-y