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Vibration Experts

Demodulation and Enveloping

Demystifying Demodulation and Enveloping

Demystifying Demodulation and Enveloping The following is a brief description of this short video on demodulation and enveloping in vibration. To learn more, please message me, email me at [email protected] or check out my course schedule at https://ZencoVibrations.com You might want to have a look at my last two articles before you read this one…
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Harmonics and sidebands

Demystifying Harmonics and Sidebands

In my last article I talked about linear and non linear systems. These systems contain frequencies, such as harmonics and sidebands, that are not in the inputs. In this article I share a short video I made with my signal processing simulator that demonstrates the concepts. Watch the video with the sound on. Feel free…
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Non-linear vibration

Linear and Non-linear Vibrations

In this article I will explain linear and non-linear vibrations in an easy-to-understand, non-mathematical way and then I will relate these concepts to machinery vibration monitoring. Linear Systems The definition of a linear system is that the output is directly proportional to the input. If you hit a billiard ball in one direction, it will…
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Alarms and Baselines

Importance of Setting up Alarms and Baselines in Machinery Vibration Analysis Machinery vibration analysis is an essential tool for monitoring the health of industrial equipment. It involves measuring the vibration of machines and analyzing the data to identify potential issues. One of the critical aspects of vibration analysis is setting up alarms and baselines to…
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False Brinelling on a shaft

Brinelling and False Brinelling

What is the difference between Brinelling and False Brinelling? What causes Brinelling and False Brinelling? Keep reading and find out! Brinelling Brinelling is named after the Brinell scale of hardness.  In the Brinell hardness test, a small ball is pressed into the surface of a material using a specific amount of force. The size of…
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Mobius Institute

Get Trained And Certified! Vibration analysis training and certification in accordance with ISO 18436-2. Come learn, get certified and move your career forward! Course Schedule We offer private virtual and on-site courses on demand. All courses are taught by Alan Friedman who you know from Mobius Institute. Contact us for pricing and availability [email protected] Category…
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technical associates of charlotte wall chart

Technical Associates of Charlotte

TA Has Closed Its Doors Come learn and get certified with us! Technical Associates of Charlotte is no more, but Zenco can train and certify you at category I, II and III in English or Spanish. We have fourteen vibration training courses scheduled in 2023 in Miami, New York and Houston in addition to virtual…
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Cat 3 logo blue

Category 3 Vibration Certification

Category 3 Vibration Analysis with Certification in Accordance with ISO 18436-2 4 Days. Optional 4 hr certification exam on day 5 The category 3 vibration course meets and exceeds requirements of ISO 18436-2. It is intended for students who have passed Cat II and wish to delve deeper into vibration analysis or manage CM programs.…
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Unbalance Force

Unbalance Force

Unbalance Force Unbalance force in rotors lead to premature machine failure. Excess unbalance forces cause bearings and seals to fail prematurely. Excessive vibration can cause other problems. It is therefore important to precision balance rotors. We can define the unbalance force in two separate ways. First, Force (F) equals the unbalance mass (m) times the…
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measuring phase with a keyphasor

Measuring Phase with a Keyphasor

How do you use a Keyphasor(TM) to measure phase? We’ll answer that question in this short post. Proximity probes, also called eddy current probes or displacement probes, are used to measure vibration in journal bearings. These probes are permanently installed in the bearing. They measure the distance between themselves and the shaft. Two probes are…
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eccentric sheave

Eccentric Sheave

Diagnosing an eccentric sheave with vibration analysis is easy to do. But you have to be careful not to mistake it for other common machine faults. For example, unbalance also shows up at 1x in the radial directions. Fortunately, you can always stop the machine, mount a dial indicator and measure the run out of…
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Misaligned Sheave

Misaligned Sheave

Diagnosing a misaligned sheave is easy to do with vibration analysis. Note how the sheave moves in the axial direction, one cycle of vibration per rotation of the shaft (1x). Note the phase relationships. As the top of the sheave moves to the right, the bottom moves to the left – meaning they are 180…
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Diagnosing Bent Shaft

Diagnosing a bent shaft with vibration analysis is easy to do, especially when you can visualize it using 3D animations. Sign up for a course and learn more: https://zencovibrations.com/events/ A bent shaft causes shaft rate vibration (1x) in all three axes. Depending on the location of the bend, one might also see an elevated 2x…
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Detecting Angular Misalignment

Why does angular misalignment produce a 1x (shaft rate) vibration in the axial direction? Why is this vibration out of phase on the bearings on either side of the coupling? It’s easy to understand if you think about it from the point of view of a bolt holding the coupling faces together. As the bolt…
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Cat 2 logo blue

Cat 2 Vibration Certification

Cat 2 Vibration. The category II vibration course meets or exceeds requirements of ISO 18436-2. It is intended for students who will be involved in the day to day testing and analysis of machinery vibration data. The course duration is four days with an optional 3 hour certification exam (100 questions / 70% to pass)…
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Cat 1 logo

Cat 1 Vibration Certification

Cat 1 vibration training and certification on-site or online. ISO 18436-2 Certified Cat 1 Vibration Course. Cat 1 vibe. Get certified now! Click here to Download a Cat 1 Brochure in PDF format. About Certification: https://zencovibrations.com/about-certification/ The Category I vibration course is intended for those who are new to machinery vibration analysis. It is appropriate…
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growing up with infrared thermography

Best Infrared Thermography Books

Infrared Thermography Books Best Infrared Thermography Books download FREE PDF eBook Kindle Nook Industrial (IR) Infrared Thermography books CRL Study Books CMRP Study Books Best Maintenance Books Ricky Smith Jack Nicholas   Buy it on Amazon Whether you’re an aspiring infrared thermographer or a long-term professional, Dr. Madding’s forty-plus years of technical and personal experiences…
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Rules of Thumb

Ricky Smith Book Download

Ricky Smith Ricky Smith Keith Mobley Book Download Free PDF eBook Kindle Nook. You can click on any of the book titles on this page to get the books. Ricky Smith was born in Charleston, South Carolina and began his maintenance career working on M551 Sheridan tanks in the US Army. He transitioned from a…
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Alan Friedman

Alan Friedman Bio 10 Components of a successful program

Alan Friedman Bio 10 Components of a successful program Video of Alan Friedman bio regarding machinery vibration analysis, Predictive Maintenance PdM, Condition Based Maintenance CBM, and running a successful condition monitoring program. Alan is the author of Audit It. Improve It! Getting the most from Your Vibration Monitoring Program.            …
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Balancing a rotor using Vibxpert II – video

Rotor balancing video Rotor balancing video from Pruftechnik using Vibxpert II. This short video walks you step by step through a simple rotor balancing procedure. Unbalance is a major root cause of machinery failure. Unbalance forces on bearings and seals can drastically reduce their useful lifetime. In fact, an increase in load of 20% can…
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