repeatability and reproducibility in vibrations

[hesparza]

Hallo everybody
I´m working on a project where vibration is measured on a production line (oil punps assembly) and I would like to do a R&R study, does any know how to make a repeatability and reproducibility in vibrations when the signal change in time and frequency? what parameter use: displacement, velocity, aceleration, time, frequency, PSD,etc?. Thank you for any advice.
Cheers

 

[GregLocock]

I'd work in the same domain as your customer's spec - if they specify a max acceleration, from a time history, use that, if they specify a max peak psd, use that.

If this is for an engineering based analysis, I'd be inclined to use velocity psd. Analyse each peak of interest separately.



Cheers

Greg Locock

SIGlease see FAQ731-376 for tips on how to make the best use of Eng-Tips.