Influence of Repeated Tensile Stress on Determining the Critical Tensile Stress/Strain of Copper Reinforced Bi-2223/Ag Tapes

摘要：

　　Critical stress/strain is an important parameter to describe the transport property of superconductors under mechanical stress.The critical stress/strain of specified superconductor should be gotten before the superconductor is applied to manufacture devices.Determination of the critical stress/strain of specified superconductor is related to the chosen reduction percentage of the critical current under monotonic mechanical stress.However,in practical applications,superconductor also withstands repetitive mechanical stresses.Therefore,the influence of repetitive mechanical stress on the critical current or N value should be considered when the critical stress/strain of the superconductor is determined.Therefore,in this paper,the electrical transport property of copper reinforced Bi-2223/Ag tapes under both monotonic and repetitive tensile stress was studied theoretically and experimentally.Based on analysis of the change of critical current and N value under monotonic and different repetitive tensile stresses,the critical stress and strain of this superconductor tape were proposed.

关键词： Repetitive tensile stress Critical stress/strain Copper reinforced Bi-2223/Ag tapes

作者: Liwei Jing Guomin Zhang Jincheng Li Xin Wu Qi Liu

作者单位: Key Lab of Applied Superconductivity, Institute of Electrical Engineering, CAS, No.6 Beiertiao,Zhong Key Lab of Applied Superconductivity, Institute of Electrical Engineering, CAS, No.6 Beiertiao,Zhong

会议类型: 国际会议

会议名称: the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))

会议地点: 太原

会议语种:英文

页码: 219-224

在线出版日期: 2012-07-13（万方平台首次上网日期，不代表论文的发表时间）