For various applications in vibration and fluid flow analysis a Polytec Laser Vibrometer is used including an OVD-02 velocity and an OVD-20 displacement decoder. This system can also be used to trigger the holographic pulsed laser system. The picture below shows the vibration frequency spectrum of a test turbine as recorded with the laser vibrometer. An additional modal analysis had been performed using pulsed laser holography.
Institute of Thermal Turbomachinery and Machine Dynamics
Graz University of Technology
Tel: +43 (0)316 873 - 7226
Fax: +43 (0)316 873 - 107226