What is the primary purpose of vibration analysis in rotating equipment?

• A. To identify fault sources and predict failures
• B. To reduce weight
• C. To measure color
• D. To test battery life

Answer: (A)

Vibration analysis in rotating equipment is used to monitor machine health by examining how the machine vibrates during operation. Different faults produce distinct patterns in both how strong the vibration is (amplitude) and what frequencies are present (frequency content). For example, imbalance shows up mainly at the running speed, while misalignment often creates harmonics or multiples of that speed. Bearing problems reveal specific fault frequencies tied to the bearing geometry. By collecting data over time and tracking trends, you can pinpoint which component is signaling trouble and estimate when a failure might occur. This enables planned maintenance before an unexpected breakdown, reducing downtime and extending equipment life. Other activities like reducing weight, measuring color, or testing battery life don’t relate to diagnosing mechanical health from vibration data.