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黄逸佳,郑健,陈志越.高温超导电缆常温及液氮温度机械拉伸性能研究[J].稀有金属材料与工程(英文),2020,49(11):3870~3874.[Huang Yijia,Zheng Jian and Chen Zhiyue.Investigation on mechanical extension property of high-temperature superconducting cable at room temperature and 77 K[J].Rare Metal Materials and Engineering,2020,49(11):3870~3874.]
Investigation on mechanical extension property of high-temperature superconducting cable at room temperature and 77 K
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Received:November 20, 2019  Revised:November 22, 2019
DOI:
Key words: High-temperature superconducting cable  Mechanical extension property  Stress-strain relationship  Young modulus  Contraction rate
Foundation item:国家电网公司科技项目(项目号520940180014)
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Huang Yijia,Zheng Jian and Chen Zhiyue  
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Abstract:
      In order to investigate the mechanical extension property of high-temperature superconducting(HTS) cable at room temperature and 77 K, we have respectively studied the mechanical extension properties of 10 m HTS cable and 10 m copper core at room temperature and 77 K. The stress-stain curves and Young modulus of the samples at corresponding temperature have been obtained by experiments. Meanwhile, we have investigated the contraction of 10 m HTS cable and 10 m copper core in a cooling process from room temperature to 77 K with tensile load of 2000 kg. The experimental results obtained in this paper could provide references to the determination of margin of cable-laying.