“Nice real-world example of how resonance can significantly amplify vibration levels on plant assets. Levels were around 50mm/sec on this mixer drive until I temporarily stiffened the structure, which increased its natural frequency away from the 25Hz excitation force. Levels dropped to 10 mm/sec. Time to add the missing bolts! Shot using v3.2 IRIS M software and colour camera onsite live mode.” — Stuart Walker
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