For the calibration of hardness reference blocks according to the German standard DIN 50156 -hardness test according Leeb -MPA NRW has realized a new concept of hardness reference standard machine. A laser interferometer is used for the continuous measurement of distance and time. In a post process the speed of the indenter will be evaluated from the measurement data. The conception of the machine, measurement capabilities and the effects of variation of test parameters are reported in the following paper.
Keywords:
Leeb-hardness, drop impact test, laser interferometer
11th HARDMEKO Conference: HARDMEKO 2010 (together with 21st TC3 Conference on Measurement of Force, Mass and Torque and 2nd TC22 Meeting on Vibration Measurement)
