Vibration Case Studies (Litrature)

[Sivayokan]

Greetings All,

I am a young engineer starting out in the noise & vibration consulting industry. I have already been on a few machinery vibration investigations and have written a few reports.

However, I feel my approach to problem solving has been a bit hap hazard, and am therefore looking for some literature and possible guidance on the proper approach to vibration investigations and analysis. Previous case studies of typical problems would be a great help.

I would also like some information on portable equipment for onsite data collection such as tape recorders or data acquistion cards. The last few investigations I have been to have been in very cramped environments and lugging a 2 channel FFT analyser around with me did not help.

Thanking you.

Cheers,

Siva.

 

[GregLocock]

Someone posted an on-line link here a few weeks ago, have a look at the older threads.

As for portable acquisition - well I'm glad we've finally got rid of tape recorders. All my data goes direct to the laptop's disk, and we can analyse it there and then.

try

http://www.prosig.com

B&K and LMS also make direct capture software.

There's no reason IN PRINCIPLE why a good soundcard could not be used as the A/D for this type of unit, if you just want two channels. Practically you may have difficulty in pinning down your calibration chain, and the lack of proper low pass filtering, and suspect low frequency performance, may all cause problems.

Cheers

Greg Locock

 

[bk33]

Hi
try this link it’s an easy on line tutorial in a general way to vibration

http://web.ukonline.co.uk/d.stevens2/vibanalysis/index.html

i hop this will help

bk33

 

[tomirvine]

I have posted some free, downloadable articles on vibration at:

http://www.vibrationdata.com/newsletters.htm

Topics include:

Pegasus Launch Vehicle Shock and Vibration
Tacoma Narrows Bridge
Baseball Bat Sound and Vibration
Moonquakes
Sonic Booms
and many more

Sincerely, Tom Irvine