Progress in Superconductivity and Cryogenics (한국초전도ㆍ저온공학회논문지)

The Korean Society of Superconductivity and Cryogenics (한국초전도저온학회)
권호 표지
DOI QR코드

DOI QR Code

Mechanical Properties of PPLP Material at Cryogenic Temperature

  • Gorospe, Alking B. (Department of Mechanical Design Engineering, Andong National University) ;
  • Shin, Hyung-Seop (Department of Mechanical Design Engineering, Andong National University)
  • Received : 2012.10.03
  • Accepted : 2012.11.12
  • Published : 2012.11.30
Download PDF
⟨ Previous Next ⟩

Abstract

In power cables as one of the important power applications adopting HTS tapes, a good insulation should be kept at its optimum performance. As an insulation material for superconducting device applications, polypropylene laminated paper (PPLP) is now widely used instead of the conventional Kraft paper. In addition to its dielectric property, the insulation material should also possess superior mechanical property at cryogenic temperatures and operability that is necessary for the insulation winding process. This study aims to evaluate the mechanical property of the PPLP material at ambient and cryogenic temperatures. At cryogenic temperature, the failure stress of PPLP increased significantly as compared with that at ambient temperature. The failure stress at both temperatures depended upon the sample orientation to the load application.

Keywords

References

  1. T. Masuda, Y. Ashibe, M. Watanabe, C. Suzawa, K. Ohkura, M. Hirose, S. Isojima et. al, "Development of a 100 m, 3 core 114 MVA HTSC cable sytem," Physica C 372-376, pp. 1580-1584, 2002. https://doi.org/10.1016/S0921-4534(02)01067-5
  2. R. Hata, "Solid DC Submarine Cable Insulated with Polypropylene Laminated Paper (PPLP)," SEI technical review: Number 62, pp. 3-9,June 2006.
  3. P. Caracino, M. Lakner, H. Okubo, O Tonnesan and B. Wacker, "Superconducting and insulating materials for HTS power applications,"15 - 405 CIGRE Session - 2002.
  4. E. Tuncer, G. Polizob, I. Sauers and D. R. James, "Electrical insulation paper and its physical properties at Cryogenic Temperatures," IEEE Trans. Appl. Supercond, vol. 21, pp. 1438 - 1440, 2011. https://doi.org/10.1109/TASC.2010.2092747
  5. H.J. Kim, D.S. Wang, Y.S. Kim and S.H. Kim, "Electrical characteristics of high - Tc superconducting mini-model cable under mechanical stresses in liquid nitrogen," Cryogenics 45, pp. 45-50, 2005. https://doi.org/10.1016/j.cryogenics.2004.09.001
  6. J.W. Choi, H.G. Cheon, J.H Choi, H.J Kim, J.W. Cho and S.H. Kim. "A study on insulation characteristics of laminated Polypropylene Paper for an HTS Cable," IEEE Trans. Appl. Supercond., vol. 20, no.3, pp. 1280-1283, 2010. https://doi.org/10.1109/TASC.2010.2044235
  7. S.H. Shin, M.J. Dedicatoria and S.S. Oh., "Critical current degradation behavior in lap-jointed coated conductor tapes with IBAD substrate under uniaxial tension," IEEE Trans. Appl. Supercond., vol. 20, no. 3, pp. 1447-1450, 2010. https://doi.org/10.1109/TASC.2010.2042049
  8. A. Nyilas, "Strain sensing systems tailored for tensile measurement of fragile wires," Supercond. Sci. Technol., vol. 18, pp. 409 - 415, 2005. https://doi.org/10.1088/0953-2048/18/12/031
  9. J. Tryding "In Plane Fracture of Paper," University dissertation from Structural Mechanics, Lund University, 1996.
  10. J. Chen, G.A. Bell, H. Dong, J.F. Smith and B. D. Beake, "A study of low temperature mechanical properties and creep behavior of polypropylene using a new sub-ambient temperature nanoindentation test platform", J. Phys. D: Appl. Phys. vol. 43, no. 42, 425404, 2010. https://doi.org/10.1088/0022-3727/43/42/425404

Cited by

  1. Comparative Study of Cryogenic Dielectric and Mechanical Properties of Insulation Materials for Helium Gas Cooled HTS Power Devices vol.27, pp.4, 2017, https://doi.org/10.1109/TASC.2016.2642581
  2. Surface Flashover Characteristics of PPLP According to Its Orientation in Cryogenic Environment vol.28, pp.4, 2018, https://doi.org/10.1109/TASC.2018.2800033