Earticle

초록

영어

The mechanical properties of REBCO coated conductor (CC) wires under uniaxial tension are largely determined by the thick component layers in the architecture, namely, the substrate and the stabilizer or even the reinforcement layer. Depending on device applications of the CC tapes, it is necessary to reinforce thin metallic foils externally to one-side or both sides of the CC tapes. Due to the external reinforcement of brass foils, it was found that this could increase the reversible strain limit from the Cu-stabilized CC tapes. In this study, the effects of differently hardened brass foil laminate on the electromechanical property of CC tapes were investigated under uniaxial tension loading. The tensile strain dependence of the critical current (Ic) was measured at 77 K and self-field. Depending on whether the Ic of CC tapes were measured during loading or after unloading, a reversible strain (or stress) limit could be determined, respectively. The both-sides of the Cu-stabilized CC tapes were laminated with brass foils with different hardness, namely 1/4H, 1H and EH. From the obtained results, it showed that the yield strength of the brass laminated CC tapes with EH brass foil laminate was comparable to the one of the Cu-stabilized CC tape due to its large yield strength even though its large volume fraction. It was found that the brass foil with different hardness was mainly sensitive on the stress dependence of Ic, but not on the strain sensitivity due to the residual strain induced in the laminated CC tapes during unloading.

목차

Abstract
 1. INTRODUCTION
 2. EXPERIMENTAL PROCEDURES
  2.1. Samples
  2.2. Mechanical and electromechanical test procedures
 3. RESULTS AND DISCUSSION
  3.1. Mechanical properties of brass laminated CC tapes
  3.2. Strain and stress dependences of Ic under uniaxial tension at 77 K
 4. SUMMARY
 ACKNOWLEDGMENT
 REFERENCES

키워드

저자

• Zhierwinjay Bautista [ Department of Mechanical Design Engineering, Andong National University, Andong, 36634 Korea ]
• Hyung-Seop Shin [ Department of Mechanical Design Engineering, Andong National University, Andong, 36634 Korea ] Corresponding author
• Byoung Jean Mean [ SuNAM Co Ltd. Anseong, Gyunggi-do, 17554 Korea ]
• Jae-Hun Lee [ SuNAM Co Ltd. Anseong, Gyunggi-do, 17554 Korea ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  한국초전도·저온논문지 (구 한국초전도저온공학회논문지) [Progress in Superconductivity and Cryogenics]

• 간기

  계간

• pISSN

  1229-3008

• eISSN

  2287-6251

• 수록기간

  1999~2026

• 등재여부

  KCI 등재,SCOPUS

• 십진분류

  KDC 427 DDC 537