Proceedings of the Korea Institute of Applied Superconductivity and Cryogenics Conference (한국초전도저온공학회:학술대회논문집)

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

RRR Behavior due to Fatigue Damage in a NbTi Superconductor Cable

NbTi 초전도 케이블의 피로손상에 따른 RRR의 거동

  • 신형섭 (안동대학교 공과대학 기계공학과) ;
  • 배영준 (안동대학교 공과대학 기계공학과) ;
  • 하동우 (한국전기연구소 초전도응용연구사업팀) ;
  • 오상수 (한국전기연구소 초전도응용연구사업팀)
  • Published : 1999.02.01
Download PDF
⟨ Previous Next ⟩

Abstract

In this study, the fatigue test at room temperature and residual resistivity measurement test at 12K were carried out, respectively, using a 9 strand Cu-Ni/NbTi/Cu composite cable, in order to investigate how the fatigue damage effects on critical properties. Through the fatigue test of a 9 strand Cu-Ni/NbTi/Cu composite cable, a conventional S-N curve was obtained even though there existed a possibility of fretting among strands. From the resistivity measurement of a NbTi strand after fatigue tests, it was found that with increase of the repeated number the RRR increased slightly, and the trend became significant with increase in maximum value of the applied stress amplitude.

Keywords