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vibration analysis overview and introduction
The document provides an overview of vibration monitoring and analysis, focusing on the principles of vibration theory including displacement, velocity, and acceleration in various types of machinery. It discusses applications such as predictive maintenance, quality control, and the identification of mechanical issues like misalignment and imbalance. Additionally, it covers vibration analysis techniques and parameters that classify vibration measurements, highlighting the dynamics of both rotating and reciprocating machines.
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vibration analysis overview and introduction
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- 5. Equipment and Processes Monitored Centrifugaland Reciprocating Pumps Compressors Blowers Diesel Engines Fans Gasoline Engines Motor/Generators
- 6. Applications Predictive Maintenance Acceptance Testing QualityControl Loose or Foreign Parts Detection Noise Control Leak Detections Aircraft Engine Analyzers Machine Design and Engineering
- 7. Machine vibration causes Misalignment Imbalance Processproblems: surge, cavitation Loose footings Miscellaneous
- 8. Imbalance effects -bearings
- 9. What is Balance? Azero quantity, and therefore is detected by observing an absence of unbalance. Unbalance is resulted from uneven distribution of body mass.
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- 13. Collapse of vaporbubbles
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- 20. VIBRATION SOURCES, Rotating Machines RotorImbalance Flow Instability and Operating Conditions Mechanical Motion and Forces
- 21. VIBRATION, Reciprocating Machines the levelof unbalanced forces generated by these machines is substantially higher. For example, a reciprocating compressor drives each of its pistons from bottom-center to top-center and returns to bottom-center in each complete operation of the cylinder. At both top-center and bottom-center a sharp increase in the vibration energy of the machine.
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- 23. Measurable Parameters Frequency Amplitude Maximum Measurement MeasurementClassifications: broadband, narrowband, and component.
- 24. MACHINE DYNAMICS Mass: Massis the property that describes how much material is present. Stiffness: is a spring-like property that describes the level of resisting force that results when a body changes in length. Damping is a means of reducing velocity through resistance to motion,
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