UCI hardness testing
The UCI-V test procedure was first used in 1965 under the name "SonoDur".
It electronically evaluates and digitally displays the Vickers hardness test indentation within fractions of a second, by a frequency shift. Due to the small indentation size and depth, the process is considered to be non-destructive.
Leeb hardness testing
With the Leeb rebound method, an impact body with a carbide ball at its front end is pushed against the surface of the test piece with a defined energy.
The impact causes a deformation of the surface, which leads to a loss of kinetic energy of the impactor. This energy loss is determined by means of velocity measurement and a hardness value is calculated from this.