Analysis Of Mechanical Vibration

Analysis of mechanical vibration generated by mechanical and electrical machines plays a vital role. As the technology advances, it becomes complex task to study the mechanical vibration. Mechanical vibration analysis includes modal analysis, environment tests, quality control and machine monitoring. This analysis finds its own application in the field of energy production, audio equipment, automotive industry, space industry and aeronautics.

Mechanical vibration analysis helps in tracing of causes of vibration of mechanical devices. Following are causes of mechanical vibration.

• Weak shaft
• Bend shaft
• Faulty joints
• Gear teeth broken
• Parts misalignment
• Mass of system
• Elasticity of system
• Rotating system
• Unbalanced force
• Bearings improper maintenance

Classifying vibration signatures requires strong understanding basis of mechanical system, fault condition and possibly mathematical solution for the same. Vibration signature predicts dynamic behavior of mechanical system. A vibration spectrum predicts periodic behavior of mechanical system and resonance properties of mechanical system. Vibration spectra analysis helps in predicting changes in amplitude, velocity or frequency of machine and its components in specific. Fatigue stress can be easily predicted by machine parts within mechanical system. In case of complex system and multi system, careful mechanical vibration analysis extends the life span of mechanical devices.

Questions:

• What is the need of mechanical vibration analysis?
• Describe vibration analysis advanced technology.
• Write short note on vibration spectra.