Evaluation of metal-foil strain gages for cryogenic application in magnetic fields

Conference · Fri Jul 08 00:00:00 EDT 1977

OSTI ID:7299919

Freynik, Jr, H S; Roach, D R; Deis, D W; Hirzel, D G

The requirement for the design and construction of large superconducting magnet systems for fusion research has raised a number of new questions regarding the properties of composite superconducting conductors. One of these, the effect of mechanical stress on the current-carrying capacity of Nb/sub 3/Sn, is of major importance in determining the feasibility of constructing large magnets with this material. A typical experiment for determining such data involves the measurement of critical current versus magnetic field while the conductor is being mechanically strained to various degrees. Techniques are well developed for the current and field measurements, but much less so for the accurate measurement of strain at liquid-helium temperature in a high magnetic field. A study was made of commercial, metal-foil strain gages for use under these conditions. The information developed can also be applied to the use of strain gages as diagnostic tools in superconducting magnets.

• Research Organization: California Univ., Livermore (USA). Lawrence Livermore Lab.
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 7299919
• Report Number(s): UCRL-79202; CONF-770801-13; TRN: 77-017119
• Resource Relation: Conference: Cryogenic engineering conference, Boulder, CO, USA, 2 Aug 1977
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
STRAIN GAGES
PERFORMANCE TESTING
SUPERCONDUCTING MAGNETS
STRESSES
CHROMIUM ALLOYS
CRYOGENICS
FOILS
MAGNETIC FIELDS
MEASURING METHODS
NICKEL ALLOYS
ALLOYS
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
EQUIPMENT
MAGNETS
MEASURING INSTRUMENTS
SUPERCONDUCTING DEVICES
TESTING
700202* - Fusion Power Plant Technology- Magnet Coils & Fields
420201 - Engineering- Cryogenic Equipment & Devices