Reproduction Test of the Delamination of REBCO-coated Conductors from the Viewpoint of Coil Fabrication

Abstract

Since the degradation of a REBCO coil was reported, coil fabrication methods that can avoid delamination have been developed. Meanwhile, it is now possible to obtain various types of REBCO-coated conductors from manufacturers these days. It is unknown if there is a coil fabrication method that matches all of the REBCO-coated conductors. When a new coated conductor is to be used for coil fabrication, some preliminary tests should be carried out in advance. We propose a chisel test that reproduces delamination of the coated conductor in a REBCO coil.