DOI QR코드

DOI QR Code

Proof tests of REBCO coated conductor tapes for device applications through electromechanical property assessment at 77 K

  • Received : 2023.09.05
  • Accepted : 2023.09.29
  • Published : 2023.09.30

Abstract

The practical application of REBCO coated conductor (CC) tapes, vital for energy transmission (e.g., cable application) and high-field magnets (e.g., coil application), necessitates efficient and simple quality assessment procedures. This study introduces a systematic approach to assess the electromechanical properties of REBCO CC tapes under 77 K and self-field conditions. The approach involves customized tensile and bending tests that clarify the critical current (Ic) response of the CC tapes under mechanical loads induced by tension and bending. This study measures the retained Ic values of commercially available GdBCO CC tapes under 250 MPa tensile stress and 40 mm bending diameter. Through experimentation, the study demonstrates the resilience of these tapes and their suitability for applications. By presenting a simplified stress-based analysis and a bending test of the tapes, the study contributes to effective quality assessment methods for the development of practical superconducting products.

Keywords

Acknowledgement

This work was supported by a grant from 2023 Research Fund of Andong National University.

References

  1. M. A. Diaz and H. -S. Shin, "Variations of the Strain Effect on Critical Current in REBCO Coated Conductor Tapes Depending on Test Probes," IEEE Trans Appl Supercond., vol. 29, no. 5, pp. 1-5, Aug. 2019, Art no. 8400905, doi: 10.1109/TASC.2019.2900976.
  2. M. B. de Leon, M. J. Dedicatoria, and H. S. Shin, "Determination of winding diameter based on bending strain analysis for REBCO coated conductor tapes," Prog. Supercond. Cryog., vol. 14, no. 2, pp. 8-11, 2012. https://doi.org/10.9714/psac.2012.14.2.008
  3. W. Goldacker, J. Kessler, B. Ullmann, E. Mossang and M. Rikel, "Axial tensile, transverse compressive and bending strain experiments on Bi(2223)/AgMg single core tapes," IEEE Trans. Appl. Supercond., 5 5030822, 1995.
  4. H. S. Shin, M. J. Dedicatoria, J. R. Dizon, H. S. Ha, and S. S. Oh, "Bending strain characteristics of critical current in REBCO CC tapes in different modes," Physica C, Supercond., vol. 469, issue 15-20, pp 1467-1471, 2009. https://doi.org/10.1016/j.physc.2009.05.067
  5. K. Kajita, T. Takao, H. Maeda and Y. Yanagisawa, "Degradation of REBCO conductor due to an axial tensile stress under edgewise bending: a major stress mode of deterioration in a high field REBCO coil's performance", Supercond. Sci. Technol., vol. 30, 2017.
  6. K. Osamura, S. Machiya and D. P. Hamsphire, "Mechanism for the uniaxial strain dependence of the critical current in practical REBCO tapes", Supercond. Sci. Technol., vol. 29, 2016.
  7. M. B. de Leon. A.R. Nisay, and H.S. Shin, "Evaluation of electrical fatigue limits in REBCO coated conductor tapes through static fatigue testing at 77 K," Supercond. Sci. Technol., vol. 35, Art no. 025009, doi: 10.1088/1361-6668/ac32ac, 2022,
  8. IEC 61788-26:2018, Ed. 1.0, "Superconductivity - Part 26: Critical Current Measurement - DC critical current measurement of RE-Ba-Cu-O composite superconductors."
  9. IEC 61788-25: 2018 Superconductivity - Part 25: Mechanical properties measurement- Room temperature tensile test of REBCO composite superconductors.
  10. IEC 61788-24: Superconductivity - Part 24: Retained critical current after double bending at RT of Ag-sheathed Bi-2223 superconducting wires.
  11. S. Otten, A. Kario, A. Kling, and W. Goldacker, "Bending properties of different REBCO coated conductor tapes and Roebel cables at T=77 K," Supercond. Sci. Technol., vol. 29, no. 12, 125003, doi: 10.1088/0953-2048/29/12/125003, 2016.
  12. M. B. de Leon. A.R. Nisay, and H.S. Shin, "Evaluation of electrical fatigue limits in REBCO coated conductor tapes through static fatigue testing at 77 K," Supercond. Sci. Technol., vol. 35, no. 2, 025009, doi: 10.1088/1361-6668/ac32ac.
  13. H. S. Shin, A. R. Nisay, M. J. Dedicatoria, and K. D. Sim, "Establishment of an easy Ic measurement method of HTS superconducting tapes using clipped voltage taps," Prog. Supercond. Cryog., vol. 16, no. 2, 2014.
  14. H. S. Shin, Z. Baustista, A. Gorospe, J.H. Lee, H. Lee, and S. H. Moon, "Electro-mechanical properties of single-side brass foil laminated coated conductor tapes at 77 K under self-field," in IEEE Trans Appl Supercond., vol. 26, no. 4, February 2016, Art no. 8401805, doi:10.1109/TASC.2016.2528549.
  15. M. A. Diaz and H. S. Shin, "Variations of the Strain Effect on Critical Current in REBCO Coated Conductor Tapes Depending on Test Probes," in IEEE Transactions on Applied Superconductivity, vol. 29, no. 5, pp. 1-5, Aug. 2019, Art no. 8400905, doi: 10.1109/TASC.2019.2900976.