creating random vibration test specifications 1

[FSB1]

I am creating random vibration test specifications for multiple units following this reference

https://femci.gsfc.nasa.gov/random/randomtestspec.html

is there a software that implements automatically these rules in guideline 3 of this reference?

it becomes useful if you have to create multiple specification curves

 

[271828]

I'm not sure what you're asking.

If you're asking about generating the plot with those various formats, etc, then Matlab or Octave would be good tools.

 

[FSB1]

271828

Open the link

https://femci.gsfc.nasa.gov/random/randomtestspec.html

and see guideline 3

My question is: if you have 200 graphs, it is not practical to analyse graph by graph and apply those guidelines. Would be practical to have a tool that creates the curves from the ASD response.
Anyone knows if such a tool that is available?

 

[271828]

I do stuff sorta like this in Octave and Matlab. Write the program so that it loops through all of the measurements.

 

[FSB1]

the question is more if the code/tool is available and not if there is a software to create it

 

[271828]

That I do not know. Sorry. Hopefully someone else will.

You might consider asking the question in the ME Acoustics/Vibrations forum.

 

[GregLocock]

I'd roll my own as 100000e suggests, but otherwise Tom at

https://vibrationdata.wordpress.com/

is a fount of wisdom( ex NASA and ex eng-tipper) when it comes to vibration and stuff. The obvious relevant program does PSD time history synthesis. It uses Matlab rather than Octave. Toolboxes->Generate signals->HALT/HASS creates a time history based on a psd .

Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376

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[FSB1]

I found this

https://blog.endaq.com/how-to-develop-a-vibration-test-standard-psd-from-experimental-data

 

[IRstuff]

As a general rule, you don't analyze each graph separately; rather, you overlay all the graphs and envelope the resultant

TTFN (ta ta for now)
I can do absolutely anything. I'm an expert!

https://www.youtube.com/watch?v=BKorP55Aqvg

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[FSB1]

IRstuff,

different components at different locations, with different responses