permanent magnet shaker
Bruel and Kjaer
The 455 shaker is designed for use in universities and research facilities for the analysis of dynamic behavior of structures and materials as well as fatigue and resonance testing. Additionally, it can be used as a velocity transducer or a high speed actuator in veterinary or medical applications.
It's construction includes a lightweight moving armature, optimized for lowest possible mass with a broad range of frequencies and bonded polypropylene flexures that provide lateral and rotational restraint in addition to the axial support for the armature and test load.
It can be mounted on an optional cast trunnion frame for 90° rotation or simply bolted down to the appropriate surface.