| 国产金属箔式应变片在低温和强磁场下工作特性的研究 |
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| 引用本文： | 徐晗,陈灼民,武松涛.国产金属箔式应变片在低温和强磁场下工作特性的研究[J].低温与超导,2002,30(1):25-29. |
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| 作者姓名： | 徐晗 陈灼民 武松涛 |
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| 作者单位： | 中国科学院等离子体物理研究所,合肥,230031 |
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| 摘 要： | HT- 7U超导模型线圈实验中 ,研究了国产金属箔式应变片在低温和强磁场下的工作特性 ;测量了应变片从室温液氮温度液氦温度的输出示应变曲线 ,以及磁场强度从 0 T- 4T时应变片的输出示应变曲线。实验测得 ,对所选用的应变片 ,从室温降至液氮温度 (77.4K)的热输出为 - 3 6 4 7με,降至液氦温度 (4.2 K)的热输出为 - 3 999με,磁场从 0 T升至 4T的输出示应变为2 3 5με。
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| 关 键 词： | 金属箔式应变片 温度效应 磁阻效应 |
| 修稿时间： | 2001年11月27 |
Study on the Home Made Metal-foil Strain Gauges for Cryogenic Application in Magnetic Fields |
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| Abstract: | During the experiment of the HT-7U superconducting model coil, we have studied the home-made metal-foil strain gauges for cryogenic application in magnetic fields. We have measured the apparent-strain curve of the tested gauge from room temperature to liquid nitrogen temperature and liquid helium temperature, as well as the apparent-strain curve when magnetic intensity varies from 0 to 4T. The test results show, for the selected strain gauge, the apparent-strain is -3647με at liquid nitrogen temperature, -3999με at liquid helium temperature, 235με at 4T. |
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| Keywords: | Metal-foil strain gauge Temperature effect Magnetoresistance effect |
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