Predictive Manitainence

Condition-based maintenance (CBM)

Definition

Condition-based maintenance (CBM) is a maintenance strategy that monitors the actual condition of an asset to decide what maintenance needs to be done. CBM dictates that maintenance should only be performed when certain indicators show signs of decreasing performance or upcoming failure.


Types of condition based maintenance

Oil analysis
Ultrasonic





  • Vibration analysis: Rotating equipment such as compressors, pumps and motors all exhibit a certain degree of vibration. As they degrade, or fall out of alignment, the amount of vibration increases. Vibration sensors can be used to detect when this becomes excessive.
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  • Infrared: IR cameras can be used to detect high-temperature conditions in energized equipment
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  • Ultrasonic: Detection of deep subsurface defects such as boat hull corrosion
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  • Acoustic: Used to detect gas, liquid or vacuum leaks
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  • Oil analysis: Measures the number and size of particles in a sample to determine asset wear
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  • Electrical: Motor current readings using clamp on ammeters
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  • Operational performance: Sensors throughout a system measure pressure, temperature, flow etc.

https://towardsdatascience.com/predictive-maintenance-detect-faults-from-sensors-with-cnn-6c6172613371

https://www.oneprod.com/blog/vibration-analysis-basics/

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