The Case Of The Missing Bearing Fault Frequency

During testing on a small gas turbine, frequencies related to the power turbine shaft and a bearing were observed. The frequencies of the fault were not associated with any known bearing on the power turbine shaft. This paper is an investigation of why the observed...

Advances in Comprehensive Fluid Analysis

We describe advanced forward-deployed comprehensive fluid analysis for wear debris and fluid condition of lubricating oil, hydraulic oil and fuel. Examples from mechanical systems are given for the detection of wear-related and fluid condition-related faults.  ...

Deliberations On Foundation Design Methods For Rotating Machinery.

For on-shore applications, the support structure for a rotating machine consists of a block foundation and base-frame (base plate) normally known as skid. Adequate dynamic analysis of support structures for rotating equipment is necessary to safeguard other machinery...

Condition Monitoring Of A Cycloid Gearbox

A cycloid drive for gearboxes allows for a high reduction ratio and zero or very low backlash. The cycloid gear design is based on compression, whereas most gear interactions are based on the shear. Further, the contract of a cycloid gear is typically subject to...

Motion Magnified Video Application To Machinery Diagnosis

Vibration detection can be performed by a meter or a single channel spectrum analyzer. The former has quantified vibration amplitude levels since the 1950s, while the latter was able to implement the Fast Fourier Transform (FFT) since the 1960s to break vibration down...

Optimal Attachment Methods For Accelerometers

Vibration detection on stationary surfaces of machinery, such as bearing housings, is typically accomplished with accelerometers. Modern accelerometers have been engineered to have a very wide frequency range with strong sensitivity of voltage to surface acceleration....

Piezoelectric VS MEMEs: Future Of The Vibration Sensors

The paper presents a detailed comparison between the traditional piezoelectric and MEMs based vibration sensors. The future prognoses of what technology and where will be used in the future is discussed.   <See More>  

Aerial Manipulation For Remote Robotic Machinery Diagnostics

There is a growing trend of using unmanned aerial vehicles (UAVs or drones) for inspection of industrial facilities and infrastructure. The types of inspections currently done entail remote sensing using cameras: qualitative assessment and photogrammetry using...

A Quick Introduction to Bearing Envelope Analysis

Bearing Envelope Analysis (BEA) is a powerful technique for the detection of bearing faults. The improper selection of the envelope window frequency and window bandwidth can render the analysis ineffective. This can reduce the ability to perform condition monitoring...

AMPLITUDE MODULATION Versus BEATS

AMPLITUDE MODULATION Versus BEATS Ronald L Eshleman, Ph.D., P.E. Technical Director for Training Vibration Institute In the past there has been much confusion over the terms “Amplitude Modulation” and “Beats”. After writing two research papers1, 2 on nonlinear...

VIATC 2019 Program Chair Invitation

As the Technical Program Chairman for Vibration Institute Annual Training Conference & Expo (VIATC), I’d like to personally invite you to attend this year’s Conference in Lexington, July 23-26, 2019. VIATC has consistently been the premier event for...

Top Ten Things to Do In Lexington, KY

In addition to a great educational program, 2019 VIATC offers attendees another great regional city to explore! With a stunning variety of local owned and run restaurants and bars in walking distance of the hotel, conference goers will be sure to have unique...