Transverse stress effects in Nb/sub 3/Sn cables
Transverse stress effects in Nb/sub 3/Sn cables
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Nb/sub 3/Sn 电缆中的横向应力效应
DOI：
10.1109/20.305643
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发表时间：
1994
影响因子：
2.1
通讯作者：
R. Wesche
中科院分区：
文献类型：
--
作者：
C. Pasztor;A. Anghel;B. Jakob;R. Wesche
本文报道了横向压应力对填充和未填充Nb/sub 3/Sn电缆临界电流的影响。本研究中使用的导体是用0.92 mm直径的青铜工艺线制造的Nb/sub 3/Sn卢瑟福电缆。与环氧树脂浸渍电缆一样，焊料填充电缆在承受相同应力时表现出比电线样品少得多的退化。另一方面，未填充的试样不可逆地损坏薄的边缘时，加载到160 MPa，并显示出显着更高的退化比类似的试样的焊料填充电缆。一个特定的复合超导体内部的应力状态的有限元计算表明，更多的压缩应力是开发在原始线比在一个真实的电缆环境中的直线段。>
The effect of transverse compressive stress on the critical current of solder-filled and unfilled Nb/sub 3/Sn cables is reported. The conductor used in this study is a Nb/sub 3/Sn Rutherford cable manufactured with a bronze-process wire of 0.92 mm diameter. Like epoxy-impregnated cables, solder-filled cables exhibit much less degradation than wire samples when subjected to the same stresses. On the other hand, unfilled specimens are irreversibly damaged at the thin edge when loaded to 160 MPa, and show significantly higher degradation than similar specimens of the solder-filled cable. A finite-element calculation of the stress state inside a particular composite superconductor indicates that more compressive stress is developed in the virgin wire than in a straight wire segment in a real cable environment. >