Magnetic moment of welded HTS samples: dependence on the current flowing through the welds

TL;DR

This paper introduces a generalized method to calculate the magnetic moments of welded HTS samples, enabling quantitative assessment of weld quality across different geometries and conditions.

Contribution

It provides a novel, generalized approach to relate magnetic moments to critical current density in welded HTS samples, facilitating non-destructive weld quality evaluation.

Findings

Method applicable to various geometries and weld configurations

Allows quantitative assessment of weld quality from magnetization loops

Works across different temperatures and magnetic fields

Abstract

We present a method to calculate the magnetic moments of the high-temperature superconducting (HTS) samples which consist of a few welded HTS parts. The approach is generalized for the samples of various geometrical shapes and an arbitrary number of welds. The obtained relations between the sample moment and the density of critical current, which flows through the welds, allow to use the magnetization loops for a quantitative characterization of the weld quality in a wide range of temperatures and/or magnetic fields.