Interview With an Expert Vibration Analyst: Severity FFT RMS and Spike Energy

This Week we connect of concepts together and lay the foundation for how we are going to interpret the Data we are collecting. We discuss Vibration Severity and charts, Root Mean Square, Spike Energy and Early detection of faults

[@JLPaper7]

Thanks, i've just seen the video you indicated me in the other comment. So my question is, when you use peak view you have to give fmin and fmax so mabe you are giving it a 2-3200 but it suppouse that peak view is reading much higer frequencies . I thoght spike energy or enveloping what was doing is that frequencies of the bearings (in ther natural frequencies) if those appear to increase their amplitude so it was easy to look for them.

[@Stubbornnut]

all peak vue is doing is using the natural harmonics of the vibration sensor itself to read acceleration at very high frequencies. you still need to input the fmin and fmax for what you are trying to see. todays data collectors are so sensitive and have the ability to store a lot of data so recording 0-100k cpm is not problem. the high end of the spectrum is determined by the rpm of the machine, the number of rollers and the type of machine. this will give you a range that a very early bearing fault would develop at. you can measure in basic acceleration at those levels but it will not give clear resolution. that’s why the peak vue was developed. it gives a resolution. at the highest frequencies

[@haseebbutt8107]

What defines the acceptance criteria for gsE Mag values. Are you aware of any standards or criteria. Suppose we observe 15 gs Mag value. How does one determine how bad this value is and is this any indication of imminent failure?