The optical vibration measurement specialist offers complete solutions for experimental modal testing with its PSV Scanning Vibrometer product family and PolyWave modal analysis software. Now Polytec extends the range of these development tools with the Qsources high-frequency shakers for efficient structural excitation. Effective immediately, Polytec will provide sales and application support for the Qsources Qlws shakers and matching Qma amplifiers through its worldwide distribution network.
The Qsources Qlws LighWeightShaker excites structures repeatably up to 13,000 Hz in a very small space. Although the shaker is permanently attached to the structure, thus requiring no support structure, it effectively contributes only 1.8 g to the mass. The Qsources shaker also has little effect on stiffness and thus fits into the measurement chain of the feedback-free laser Doppler vibrometer. The inertial mass is dynamically decoupled from the stinger by a patented internal suspension. The generated force is given by the stinger and is thus perpendicular to the surface. A single-axis IEPE force sensor is integrated into the inertial mass to measure the transfer function.