everything that rotates
                        needs to be balanced


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Vibration Information for rotating machinery applications.


Risk Assessment: Selecting the Best Technology for Vibration Monitoring

Monday, January 16, 2012

It is recommended to perform review of all the plant equipment before selecting the technology to monitor vibration and detect faults. There are issues that should be considered when selecting technology such as: Read More

Spectral Vs. Waveform Data

Friday, January 13, 2012

Spectral data is displayed in the frequency domain while waveform data is in the time domain. Spectral information is obtained by applying a Fourier transform to waveform data; this converts the data to show that amplitude and phase of the vibration at different frequencies. Read More

Vibration Meters

Tuesday, January 10, 2012

Vibration meters are handheld instruments which are connected to and receive a signal from a vibration transducer and have a capability to process data so as to give an indication of vibration parameters. They are sometimes made specifically to meet certain standard, for example, ISO 2631 for Human Vibration or ISO 2372 for Vibration Severity of Rotating Machines. This blog article is focused on more general-purpose vibration meters. Read More

Vibration Analysis: Bent Shaft

Friday, August 26, 2011

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Damping Ratio in Free Vibrations

Saturday, August 06, 2011

Free vibrations can be defined as oscillations about a system’s equilibrium position that occur in the absence of an external excitation. In physics, perpetual motion is impossible. Dry friction, viscous friction, internal friction of the system, aerodynamic drag, etc eventually dissipate the energy (damping). For example, in one degree of freedom system, a mass is suspended by a spring, which is attached to a ceiling. If we pull the mass down and release it. the mass will oscillate and eventually return to its equilibrium position. Read More