Vibration table for tests (7-200Hz) from extruded aluminium profiles bolted together - good idea (?)

[filiply]

I need to design a vibration table (approx. 1000x1000m) to test products between 7-200Hz. I was wondering if it is recommended to make the table structure from standarised, extruded aluminium profiles bolted together to reduced the cost (material + time) or does one have to go with a welded structure?

Yes, I am aware of the results of the Junker vibration test with regards to bolted connections and it seems like a bad idea, because all the fasteners would loosen. However, maybe there is a workaround to use these aluminium profiles?

I sincerely appreciate any advice and/or previous experiences with these.

 

[filiply]

Thank you for all the answers -> I have just realised what a complex problem this is given how the professional equipment looks like:

https://www.mtixtl.com/ComputerizedAutomaticVibrationSystemUN38.3.4.3--MSK-ES-4.aspx

Nevertless, we will be building something much simpler just to test our DUTs, even if it will be a mediocre approximation.

 

[SnTMan]

Why test labs exist

The problem with sloppy work is that the supply FAR EXCEEDS the demand

 

[SwinnyGG]

even if it will be a mediocre approximation

Be wary of that... those of us giving you advice have no idea who your customer is, but if it were me and I found out you were using something home made and almost certainly were generating data that was useless and/or not trustworthy, I would be forcing you to hire the testing out to someone experienced and competent in the world of vibration testing and analysis.

It's possible that your testing may very well generate data that will be inaccurate and cause you to make decisions about your product that are wrong.