Excitation
In a vibrating mechanical system, the force, or forces, which cause the vibration are called the excitation forces. If a mechanical system such as a machine is excited at a particular frequency, it will vibrate at that frequency, and the vibration can be sensed almost anywhere on it. Machinery analysis uses this basic fact, i.e. when a cracked bearing race causes a force on the bearing housing at its characteristic frequency, this can be sensed by a vibration transducer and the crack thus detected.
Azima DLI provides products and services for Predictive Maintenance including vibration analysis instruments, monitoring and diagnostic software, and consulting for CBM programs.
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