Study on the prediction of quench occurrence in superconducting coils

A formulation is presented of elastoplastic stress analysis of a laminated structure on the basis of the finite-element method with use of Voigt´s and Reuss´s assumptions. Systematic tests were carried out at room and cryogenic temperatures with specimens composed of stainless steel and epoxy resin to depict a slip curve representing strength of the interface. A three-point bending test was performed to measure temperature rise due to slip and to evaluate temperature distribution by a 3-D computer code. quench experiments were also carried out simulating bulk heating with 35-MeV electron beam.