  We propose an empirical approach to estimate the quality of superconducting
joints (welds) between blocks of bulk high temperature superconductors (HTS).
As a measuring value, we introduce a joint's quality factor and show its
natural correlation with joint's critical current density. Being simple and
non-destructive, this approach is considered to be quite important to solve the
problem of utilization of HTS in large scale applications. The approach has
been applied to characterize the joint's quality of melt-processed Y-123 joined
by Tm-123 solder.
