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...
This paper presents a case study in diagnosing an excessive pipe vibration due to the beating phenomenon. The outdoor process pipes in a sewage plant were found to vibrate viciously and resulted in emitting loud humming noise that affecting the surrounding community....
For on-shore and grout less design applications, the support structure for a rotating machine consists of a base-frame (base plate) normally known as skid. Most of the time these structures show up with high vibration on machine bearing cap due to structural...
In a Petrochemical Complex, liquid Propylene as a product is transferred by a transfer pump from storage tanks for ship loading / other required facilities. Liquid Propylene has a boiling point of minus 47.7 degrees Celcius, hence operating fluid must be kept below...
This paper describes the relationship between a bathtub curve, failure distributions, and commonly used metrics: mean-time-before failure (MTBF), mean-time between failure (MTBF), and mean-time-to failure (MTTF) – metrics that are often misunderstood and misused. A...
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....
During operation, it was observed that a specific mechanical system experienced undesirable vibration and it became necessary to understand and mitigate this phenomenon. This document investigates the tools, methodology, and results of the dynamic characterization of...
This paper describes a design for an example of a Prognostic Health Monitoring (PHM) system that is able to detect a state of degraded health and make an accurate prediction of when a resulting future failure in the system is likely to occur in a dual set of...
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>
The research was performed to show the feasibility and scale-up potential of production of replacement parts for long lead time DoD critical components utilizing a sand 3D-printer with indigenous desert sand to produce casting molds from a digital drawing of the...
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...
Belt-driven mechatronic systems are popular for a range of applications. A modified robotic manipulator was adapted to allow different belt-drive faults to be incorporated into the mechanism, with additional sensors to characterize the compromised kinematics....
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 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...
Learn more about the Vibration Institute’s CAT IV Advanced Vibration Control course from Robert Sayer, P.E., President of the Vibration Institute. Robert Sayer, P.E. is the President of the Vibration Institute and owner of Applied Structural Dynamics...
A Brief History of Vibration Testing and Analysis for Industry: 1959 to 2019 and Beyond Wednesday, July 24th @ 8:30 AM – 10:00AM This lecture consists of two parts – one looking back and the other looking forward – addressing the specific issue of how to use...
You are invited to join me and about 300 other vibration analysts at the 43rd Vibration Institute Annual gathering. It is an opportunity to learn some new ideas and techniques as well as review the latest offerings of the vendors in a low key Kentucky environment....
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...
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...
Check Your Mailbox … Vibration Institute members will be receiving their issue of Vibrations, the Vibration Institute’s members-exclusive publication, within the next few weeks. Loaded with great content, this issue of Vibrations will feature: A letter from our...
Join me April 1-4 for the “Vibration Diagnostics using Modal and ODS Analysis” to learn more about these powerful diagnostic tools. I have been asked if Modal and Operating Deflection Shape testing is still necessary if the vibration characteristics of a machine...
Michael Long, Vibration Institute Executive Director Spring 2018 From participating in several conferences to launching the first Vibration Institute Middle East Conference and the Vibration Institute Road Show, we are expanding our outreach to connect...
Dave Corelli, Past President Winter 2017–2018 It is hard to believe, but six years have passed since I became the President of the Vibration Institute. It has been a very busy and exciting time for me. I have had the opportunity to move the Institute forward in...
Michael Long, Vibration Institute Executive Director Spring 2017 Vibrations 3 Throughout my tenure as an association professional, my favorite part of my career has always been the association’s annual conference. Why? Because I get to meet you! Very few jobs...
Michael Long, Vibration Institute Executive Director Fall 2017 Vibrations 3 I have now been the Executive Director for the Vibration Institute for a little over a year. Although a great deal has been accomplished at the Institute in that time, it is just a...
