Definition
Vibration analysis is the interpretive method applied to measured vibration data, extracting frequency content relative to running speed to diagnose specific mechanical conditions such as imbalance, misalignment, or bearing defects. It is the analytical process, distinct from the vibration sensor, which is the instrument that captures the raw signal being analyzed.
Key facts
- The analytical interpretation applied to data, not the physical motion (vibration) or the instrument (vibration sensor) itself.
- Extracts frequency-domain content (via techniques like FFT) to identify specific fault signatures relative to running speed.
- Different frequency patterns point toward different conditions: 1x running speed suggests imbalance, multiple harmonics suggest looseness, and so on.
- A core technique underlying condition-based and predictive maintenance for rotating equipment specifically.
How does Vibration analysis work in maintenance?
Vibration analysis takes raw vibration signal data and applies frequency-domain analysis to identify which specific frequencies are present and at what amplitude, then interprets that frequency content against known fault signatures to diagnose the specific mechanical condition responsible: imbalance, misalignment, looseness, or a bearing defect frequency.
What does Vibration analysis require?
Vibration is the physical motion. A vibration sensor is the instrument that measures it and converts it to an electrical signal. Vibration analysis is the interpretive method applied afterward, extracting meaning from the resulting data to reach a specific diagnostic conclusion about the machine's mechanical condition.
FAQ
Frequently asked questions
How are vibration signals evaluated for condition assessment?
Through vibration analysis: extracting frequency content from measured vibration data and interpreting it against known fault signatures to diagnose the specific mechanical condition responsible, such as imbalance or misalignment.
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