Bump Test, Frequency Response Function, Resonance problems solving by ADASH Vibration analyzer

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In this video we will be talking about machine resonance problems and how to perform Bump test measurement, frequency response function measurement with our 4 channel vibration analyzer VA4 Pro.
More information about actual device Adash VA5 Pro can be found here:
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All ADASH products can be found here:
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[@SuperAbcd333]

This video explains the need for vibration mode and shape measurements in machines crystal clear !! Thanks ADASH for making such a nice video. I am a fan of your video series. :)

[@mohammedali2013]

This is the video which explained the natural frequency determination for me

[@gustavo23991]

Really thanks for this video! Give a ideia pract of why mechanical engineer students (like me) should study Vibration. Amazing explanation! Greetings from Brazil!

[@andersonpinesso2812]

Thanks for a very good explanation

[@FruiceProduces]

Great video, cheers!

[@abudkostello]

good product

[@vilivont4436]

Great video

[@Nitesh-dz8ho]

Is that a modal hammer or a normal hammer

[@SHTan-gh4cx]

1st & 2nd modal.

[@khalidfahad356]

Thanks dear

[@jorgebolivar3719]

Buenos dias. Estimados, esta prueba se puede realizar con un sensor triaxial?.. EL equipo Va4pro tiene la posibilidad de realizar la prueba con una maquina en funcionamiento?.

[@AdashCompany]

Hello. Bump test is one channel measurement. Result will be the same on all 3 channels if you will measure with triaxial sensor. See this video about measuring bump test on running machine: th-cam.com/video/no03XOy0cvU/w-d-xo.html

[@MrICE003]

Hi, may I know is it a must for bump test results to be in g instead of mm/s?

[@AdashCompany]

It is not a must. I depends what physical quantity you prefer and which one is suitable for particular application.

[@ahmedzuhair4474]

2/12/2021

[@MrICE003]

Hi, which parts of a motor should we perform this bump test?

[@AdashCompany]

Resonance frequency is the same within the whole structure. Therefore it does not really matter on which part you perform the bump test. However you should select a few points on the motor and measure FFT on them. For bump test then select point where you see the biggest response of your knocking in FFT.

[@MrICE003]

@@AdashCompany When u mentioned "whole structure", does this include the DE & NDE end shields as well? Is the motor four feet the best place to conduct the bump test?

[@AdashCompany]

​@@MrICE003 If you mean NDE fan cover which is made from weak metal sheet, then the answer is NO. It must be solid part of a machine body. You contacted also us via email so lets continue there ;-)

[@MrICE003]

@@AdashCompany Sure thing 😁👍