Nickel-chromium strain gages for cryogenic stress analysis of superconducting structures in high magnetic fields
Abstract
Evaluation and calibration measurements were performed on commercial nickel-chromium metal-foil strain gages in a high-magnetic field, liquid-helium environment. The magnetoresistance of a number of strain gages was measured in three orthogonal directions at mechanical strain levels to 8900 microns. As a result, a unique calibration curve was defined for magnetoresistance strain errors that is independent of strain level and field direction to 12 T at 4.2 K. A current strain gage application is the measurement of superconductor mechanical properties.
- Publication:
-
Presented at 7th Symp. on Fusion Res. Project
- Pub Date:
- October 1977
- Bibcode:
- 1977frp..sympT....F
- Keywords:
-
- Chromium Alloys;
- Cryogenic Magnets;
- Nickel Alloys;
- Strain Gages;
- Stress Analysis;
- Magnetic Fields;
- Magnetoresistivity;
- Mechanical Properties;
- Superconducting Magnets;
- Instrumentation and Photography