Fig. 1. Concept of the method based on tuning the interference of solid waves. The position of the standing wave results from phases of the travelling waves. T1 and T2 represent the stationary sources of travelling waves. (A) Example specimen with a locally modified damping distribution with the anti-node of the standing wave in the area of a local damping maximum. (B) Example specimen with a locally modified damping distribution with the node of the standing wave in the area of a local damping maximum. (C) Graphical illustration of a damping profile to be determined based on shifting the interference of solid waves between the point T1 and T2.