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Why Second Order Kalman Filter is needed for Advanced Vibration Monitoring
10/30/2011
Second Order Kalman Filter - Advanced Vibration Monitoring   
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Should I Install Single Plane or XY Proximity Probes?
08/19/2011
 Can I do an adequate job of machinery protection and asset management with a single plane measurement?
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Dissipating Rotor Vibration Energy via a Fluid Film Bearing
06/30/2011
Any looseness between the bearing and the housing, the housing and the foundation, the foundation to ground will result in unwanted seismic relative motion which will adversely affect damping within the bearing.  Any looseness between the bearing and its housing, the housing and the foundation, or the foundation and ground will reduce  overall damping which can lead to elevated vibration amplitudes at one or more frequencies.
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Shaft Average Centerline and DC Orbit Data Plots
03/09/2011
Most vibration data plots, including: Timebase, Orbit, Polar, and Bode, present dynamic vibration data.  For seismic transducers, this dynamic data is inertially referenced to ground.  For the case of the shaft relative proximity probe, the dynamic vibration occurs about a –dc gap voltage, with the –dc gap voltage being proportional to the average distance from the probe tip to the target (shaft).  These data plots display dynamic vibration data, but do not show changes in the average shaft radial position, an important response characteristic of the rotor system.
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Vibration: The pulse of rotating machinery
02/01/2011
The root cause analysis of vibration problems related to critical turbomachinery is an engineering science based on what is often referred to as the "First Law of Machinery Diagnostics".  The 1st Law states that displacement (vibration) is equal to the summation of the dynamic forces acting on the rotor divided by the complex dynamic support stiffness of the rotor bearing system.
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