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RustyCas

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Reply with quote  #16 
“ It has its limits...its not perfect for every problem...”. Wow. You never hear a vendor say that!

David, We’ve discussed motion amplification quite a bit in this forum (search for MA or ‘motion amplification’) Most of us sound a little cynical on the subject, but in reality I expect that we all wish we had a MA system, but I think we struggle with the cost-benefit ratio. It just seems overpriced for what amounts to “show and tell” - if you look at all the MA example cases scattered about the internet (LinkedIn especially), I think most of us here could arrive at the same conclusions with our standard VA tools, and likely just as quickly.

I look forward to learning more about your system. Feel free to start a topic in our TradeShow category if you’d like, with info or videos as you see fit.

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ivibr8

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Reply with quote  #17 
Some years ago I was asked to perform an ODS on a ball mill at a local factory.
The ball mill was used to process wollastonite for industrial applications.   The pebble mil (thinK GIANT cement mixer) was driven by a large motor thru a reduction gear.

When I got there, the reduction gear (400 Hp unit - mfg. Horsburg & Scott) was rocking on its foundation. The product (calcium metasilicate) covered the entire machine train so I took an hour to clean it to see the obvious (at least to me) problem, the foundation plate was lifting up and down due to loose bolting.  When I mentioned this to my client, it didnt seem to matter, he wanted a full-blown ODS.    That was what I was contracted for and that is what I did....... at much effort and cost.  The frequency of output was 194 CPM.

This problem aside, I want to ask our forum members, "about" what percentage of your resonance/loose foundation problems have a frequency less than, say 7200 RPM?

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Jim P 
mderbessd

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Reply with quote  #18 
Quote:
Originally Posted by RustyCas
“ It has its limits...its not perfect for every problem...”. Wow. You never hear a vendor say that!

David, We’ve discussed motion amplification quite a bit in this forum (search for MA or ‘motion amplification’) Most of us sound a little cynical on the subject, but in reality I expect that we all wish we had a MA system, but I think we struggle with the cost-benefit ratio. It just seems overpriced for what amounts to “show and tell” - if you look at all the MA example cases scattered about the internet (LinkedIn especially), I most of us here could arrive at the same conclusions our standard VA tools, and likely just as quickly.

I look forward to learning more about your system. Feel free to start a topic in our RoadShow category if you’d like, with info or videos as you see fit.
RustyCas

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Reply with quote  #19 

Jim, most of the resonance/looseness “problems” I see are very near a running speed, and since 3600 rpm is the upper limit of what I see, then I’d say 100% of the problems I see are less that 7200 cpm.

I’m curious as to the origin of your question.


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ivibr8

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Reply with quote  #20 
Quote: I’m curious as to the origin of your question.

It seems to me that the majority of the problems presented/identified using amplified motion is due to resonance or looseness problems. Because of the concerns of our members about the limitations of using a standard cell phone video's frame rate, I wondered how many other problems (higher frequency) are viable candidates for detection using this process....and ultimately, at what higher cost for an expensive camera.

There may be other issues (as brought up in this discussion) that come into play but for most common problems we "machinery health" professionals deal with, a lower cost solution is always worth looking into.

I didn't want to bait or prejudice anyone's conclusion at this time in the discussion, that's why I asked. There is still much I need to understand myself and perhaps I'm not asking other questions of concern.  In the case I presented in my previous post, it was a problem at a frequency that I could have easily presented in a video (vs. time consuming ODS)

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Jim Powers
OLi

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Reply with quote  #21 
Well once in a while the resonance is excited by alignment problems one way or another so going a bit passed 2xRPM for normal LF would be nice to have. So just short of 150Hz would be nice. Then we have vane pass in fans maybe but it may be to much to ask for and not so common in those I see.
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mderbessd

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Reply with quote  #22 
Hello everyone I just thought I would put together another quick note and update to better explain our solution.

https://www.erbessd-instruments.com/articles/video-deflection-motion-amplification

All the best...hit us up with questions we are more than happy to be of assistance if you have ideas on how we can make our products and solutions the best they can be.
electricpete

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Reply with quote  #23 
What is the price of the Dragon vision software?
mderbessd

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Reply with quote  #24 
Pete,

Vendor disclosure...

I'm the CEO at ERBESSD INSTRUMENTS and would be happy to work with you and your team. 

DragonVision is $2495 and the WiSER 3x used as reference is $2995. 

There are 3 calibration methods...1st is the WiSER 3x and is the most accurate because the cal signal is triaxial and realtime with the video/synced. 

The second method uses x/y displacement rms values from any accel and an identified reference location on the machine/structure in the video frame. 

The third uses distance. 

That said there are a number of cases on LinkedIn already and I'm happy to setup a demo at your convenience. The brochures are attached as well. 

All the Best,

M. David Howard, CRE, CMRP, CSSBB
CEO 
ERBESSD-INSTRUMENTS

 
Attached Files
pdf Dragon Vision-EN.pdf (1.76 MB, 17 views)
pdf Wiser 3X-EN-reduced.pdf (6.40 MB, 10 views)

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