Title :
Epoxy cracking in the epoxy-impregnated superconducting winding: Nonuniform dissipation of stress energy in a wire-epoxy matrix model
Author :
Tsukamoto, O. ; Iwasa, Y.
Author_Institution :
Yokohama National University, Yokohama, Japan
fDate :
3/1/1985 12:00:00 AM
Abstract :
We present the epoxy-crack-induced temperature data of copper wires imbedded in wire-epoxy resin composite model at 4.2 K. The experimental results show that the epoxy-crack-induced temperature rise is higher in the copper wires than in the epoxy matrix, indicating that in stress-induced wire-epoxy failure, stress energy stored in the wire-epoxy matrix is preferrentially dissipated in the wire. A plausible mechanism of the nonuniform dissipation is presented.
Keywords :
Epoxy resin-insulated cables; Mechanical factors; Superconducting rotating machines; Windings; Coatings; Conductors; Copper; Epoxy resins; Plasma temperature; Stress; Superconducting filaments and wires; Superconducting magnets; Superconducting transition temperature; Thermal conductivity;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.1985.1063623
