Effect of epoxy debonding and cracking on stability of superconducting composites

✍ Scribed by V.I. Dotsenko; I.F. Kislyak

• Publisher: Elsevier Science
• Year: 1991
• Tongue: English
• Weight: 566 KB
• Volume: 31
• Category: Article
• ISSN: 0011-2275
• DOI: 10.1016/0011-2275(91)90027-t

✦ Synopsis

This paper presents the results of modelling the elementary mechanical effects which can be detected in epoxy-impregnated superconducting magnets. The study was carried out at 4.2 K and consisted of using three different schemes to load samples made up of a short piece of superconducting composite (Cu-Nb, Cu-NbTi or bronze-Nb3Sn) and epoxy resin, and simultaneously monitoring the stability of the superconducting state in the composites. The detectable mechanical effects of epoxy debonding and cracking cause instabilities in the composites in the form of trapped magnetic flux jumps and normal zones.