Types of Vibration
- Free vibration occurs when a system is set in motion and allowed to vibrate freely
- Forced vibration happens when a time-varying disturbance is applied to a system
- Damped vibration occurs when the energy of a vibrating system is gradually dissipated
- Harmonic disturbance is a periodic and steady-state input that can cause forced vibration
- Non-harmonic disturbance is a non-periodic input that can also cause forced vibration
Vibration Isolation
- Vibration isolation prevents the transmission of vibration from one component to others
- Vibrations propagate via mechanical waves, and certain linkages conduct vibrations more efficiently
- Passive vibration isolation uses materials and linkages to absorb and damp mechanical waves
- Active vibration isolation involves sensors and actuators that produce disruptive interference
- Vibration isolation is important in engineered systems and habitable spaces
Vibration Testing
- Vibration testing introduces a forcing function into a structure to examine its response
- Shakers are commonly used to apply the forcing function to the structure
- Vibration testing can assess the ability of a device to function in a vibration environment
- Different types of vibration testing include sine tests and random tests
- Vibration testing can be conducted in multiple axes simultaneously
Vibration Analysis
- Vibration analysis aims to reduce maintenance costs and equipment downtime
- It is used in a condition monitoring program to detect equipment faults
- Vibration analysis is commonly used to detect faults in rotating equipment
- Common faults detected include imbalance, misalignment, and bearing faults
- Vibration analysis can be displayed as time waveforms or spectra
Related Studies and Concepts
- The studies of sound and vibration are closely related and fall under acoustics
- Sound is generated by vibrating structures and can induce vibration in other structures
- Attempts to reduce noise are often related to issues of vibration
- Designing vibration control is undertaken in acoustic, automotive, and mechanical engineering
- Machining vibrations are common in the process of subtractive manufacturing
- Frequency response function (FRF) is the transfer function of the system in vibration analysis
- FRF has both magnitude and phase components and can be used to determine vibration characteristics
Vibration Data Sources
| Reference | URL |
|---|---|
| Glossary | https://www.alternix.com/blogs/glossary-of-terms/vibration |
| Wikipedia | http://en.wikipedia.org/wiki/Vibration |
| Wikidata | https://www.wikidata.org/wiki/Q3695508 |
| Knowledge Graph | https://www.google.com/search?kgmid=/m/01jwx6 |
