Contactless vibration measurement with the laser vibrometer
In cooperation with LB-acoustics Messgeräte GmbH, we carried out a laser vibrometer measurement at the MAST as part of the testing of the 700 bar hydrogen storage system for heavy commercial vehicles from Voith HySTech.
This technology is based on the Doppler effect: the frequency shift of the reflected laser beam compared to the emitted signal allows the surface speed to be measured precisely – and completely contact-free.
We used this method to measure vibrations in all three spatial directions. One of the highlights was a specially manufactured subframe, with which the laser vibrometer was lifted by crane to a height of 5 meters, allowing us to measure the hydrogen storage system from above. Further measurements were taken from the ground using a tripod.
This measurement method is used to validate simulation results – a crucial step in verifying and improving their accuracy. In this way, we offer our customers an even more sound basis for their development processes.
