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Hi all, I am measuring acceleration levels on a rotating disc with the help of 4 accels in axial and 4 accels in tangential direction (90 degrees apart). The intention is to capture wobble motion, and in plane radial motion on the the face of the disc. While I do frequency analysis, I see that...

Moving on, The next one is a little more complicated for me. I also measured water pressure in the same setup. All details on the attached picture. I used 2 sensors for each line (water in and water out). One mounted right on the water line and the other one using 12 inch hose. For 12 inch...

Gentlemen, Thanks a lot for your inputs. In the attached picture, I have attached the cross-sectional schematic of the hoses that I used for taking air pressure measurements. The cross-section of the fitting going into the hose is smaller comparatively. I have calculated the resonance...

Strong, Well, with oil, the pressure is 5000 psi and I do not see any resonance with the same length of hose. I have mounted another sensor right at the test piece and that does not show any resonance. I just want to identify what is causing it and how to better explain it. Then later on I can...

One correction - Oil pressure measures is in 1000's psi and I do not see any resonance after using 1ft long hose.

Gentlemen, Thanks a lot for your replies so far. I have attached a picture showing differnt measurement setups along with the fft's. Temperature - increases from 130 - 200 C during the runs Mean Pressure - increases from 200 - 350 KPa Resonance is seen through out the run. Can you please...

I am trying to get dynamic pressure measurement using a strain based pressure transducer (good upto 5000 Hz). I have used 2 different lengths of plumbing (hose) to mount my sensor. While using 12 inches hose, I see a resonance of 228 Hz in my data. While using 7 inches hose, I see a resonance of...

I am building a surface model in CATIA and saving it as a cgr file to be used later on in the DMU Optimizer work bench. I want to know is there a way to control the size of the cgr obtaines. I mean is there a way to control the triangulation perfotmed on that surface so that I can get cgr with...