shock pulse vibration 3

[albo]

looking in to remote condition monitoring of radar sites,problem being have a large slewring ring 6ft in diameter rotating at 7rpm. Some of the sites are situated around the coasts and north scotland.Just worried that the use of accelerometers and shock pulse methods will not distinguish between large gusts of wind and a proper fault. Have been advised that the only way to monitor this ring is acoustically, is this true (came from a biased source). Can shock pulses monitor sufficiently in any environment or do i need to question their suitability?
Thanks

 

[tomirvine]

If I understand correctly, you need to distinguish between wind-induced vibration and seismic vibration.

I recommend that you install accelerometers on your radar system.

You should also install some accelerometers or geophones on the ground. One accelerometer could be mounted at the base of the radar. Another could be mounted at some distance from the radar.

Also, install a pressure tube anemometer (wind speed sensor) at the radar site.

You can then determine the excitation source by comparing the data from all of the sensors.

Tom Irvine

http://www.vibrationdata.com

 

[GregLocock]

If you are looking for bearing or gear defects then an accelerometer will have no difficulty in telling the difference between that and wind. I like Tom's idea of an anemometer, but I think it is gilding the lily (oh well, your tax dollar at work).

I struggle with an acoustic solution in the presence of high wind speeds.



Cheers

Greg Locock

 

[dgallagher]

SKF has done vibration analysis on quite a few radar sites and large satelite dishes - 7rpm and slower. Dr. Bob Jones in particular can be of help to you. I recommend you post at their forum at

http://forums.skfcm.com/ubbthreads.php

 

[venom]

Suggest you look on

http://www.intelleqt.co.uk

web for a software solution.Ashley Elkins would be a good contact.