Technologies in the field of Vibrations

[Amer93]

Hello,

What are some of the recent technologies in condition monitoring, machine fault analysis, PdM, etc. that can assist my dynamic analysis team?

 

[electricpete]

You don't say really what you're specializing in.

I'll tell you what we have recently added for our rotating machinery vibration monitoring (after decades of monitoring only with handheld data collectors).
[ul]
[li]1 - More permanently installed vibration sensors on some critical equipment. Battery powered accelerometers with wireless connectivity are cheap/easy to install. Can give more data with less manpower than manual data collection. And if installed at inaccessible locations (below grade on vertical pump column), it gives you access the measurement points you couldn't see before.[/li]
[li]2 - Motion Amplification (computer processing of specially collected video). Ideally it's an instant operating deflection shape analysis (at each frequency). In practice it takes a little work to capture and analyse. [/li]
[/ul]



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(2B)+(2B)' ?

 

[geesaman.d]

1 - More permanently installed vibration sensors on some critical equipment. Battery powered accelerometers with wireless connectivity are cheap/easy to install. Can give more data with less manpower than manual data collection. And if installed at inaccessible locations (below grade on vertical pump column), it gives you access the measurement points you couldn't see before.
2 - Motion Amplification (computer processing of specially collected video). Ideally it's an instant operating deflection shape analysis (at each frequency). In practice it takes a little work to capture and analyse.

Good suggestions. I have a word of warning about each:
1) The battery powered vibration sensors are slick, but beware of vibration response for any frequency (shaft RPM) below 1200cpm. They have very poor response for anything lower than that.
2) Motion amp is especially helpful where it's hard to diagnose the source of unexpected vibration. But do be careful to always label the video clearly as motion amplified. Don't want to give someone a stroke thinking it's a regular video.