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EXPERIMENTAL AND THEORETICAL INVESTIGATION OF MECHANICAL DISTURBANCES IN EPOXY-IMPREGNATED SUPERCONDUCTING COILS. 2. SHEAR-STRESS-INDUCED EPOXY FRACTURE AS THE PRINCIPAL SOURCE OF PREMATURE QUENCHES AND TRAINING. THEORETICAL ANALYSIS.

Author(s) : BOBROV E. S., WILLIAMS J. E. C., IWASA Y.

Type of article: Article

Summary

AN EPOXY-IMPREGNATED SUPERCONDUCTING WINDING MAY BE CONSIDERED STRUCTURALLY AS A UNIDIRECTIONAL COMPOSITE CONSISTING OF SUPERCONDUCTING WIRES EMBEDDED IN A MATRIX OF EPOXY RESIN WHICH IS SUSCEPTIBLE TO BRITTLE FRACTURE OCCURRING UNDER STRESSES INDUCED INITIALLY DURING THE COOLDOWN AND THE MAGNET CHARGE-UP. IT IS SHOWN THAT THE TRANSVERSE SHEAR STRESSES INDUCED BY LORENTZ FORCES IN WINDINGS WITH CYLINDRICAL SYMMETRY ARE PRINCIPALLY RESPONSIBLE FOR PREMATURE MAGNET QUENCHES. ALSO, THE WHOLE WINDING BODY MUST NOT BE RESTRAINED BY THE COIL FORM AND MUST BE FREE TO TAKE ITS NATURAL SHAPE AS THE MAGNET IS ENERGIZED.

Details

  • Original title: EXPERIMENTAL AND THEORETICAL INVESTIGATION OF MECHANICAL DISTURBANCES IN EPOXY-IMPREGNATED SUPERCONDUCTING COILS. 2. SHEAR-STRESS-INDUCED EPOXY FRACTURE AS THE PRINCIPAL SOURCE OF PREMATURE QUENCHES AND TRAINING. THEORETICAL ANALYSIS.
  • Record ID : 1986-0033
  • Languages: English
  • Source: Cryogenics - vol. 25 - n. 6
  • Publication date: 1985

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