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  1. frizzit

    Frequency analysis software for structure borne noise

    I'm exploring the use of glyphXe for frequency analysis currently. One of our other locations has a license for this software. We are not looking for frequency modes of resonance. We need to induce some energy in the 6-20 kHz range and find the best path for those frequencies through the...
  2. frizzit

    Frequency analysis software for structure borne noise

    Walt, it's not quit a hammer at all http://www.pcb.com/spec_sheet.asp?model=086E80 I would never use it to hammer anything, it's so tiny. Steve, I have not gotten that far, and I hope to find a paper/primer/technote/website on conversions and correction factors. It seems like my math...
  3. frizzit

    Frequency analysis software for structure borne noise

    except my acceleration is in g's so: (X(w) * 9.807)/(2*Pi*f) gets me m/s http://www.ctconline.com/pdf/pubTechPapers/01-Beginning%20Vibration%20Analysis.pdf page 57
  4. frizzit

    Frequency analysis software for structure borne noise

    So digging round the forum I'm guessing if I divide the fft acceleration X(w) by 2*pi*frequency*i it will net me V(w), then I can divide that by F(w). X(w)*2*pi*f*i V(w) --------------- = ----- F(w) F(w) Can I integrate the acceleration channel to velocity first and then...
  5. frizzit

    Frequency analysis software for structure borne noise

    I'll do some digging on the structural intensity topic. I've also been barking up the LMS and B&K trees already. My application requires 1 input (modal hammer) with ~14 accelerometers on the structure. I believe my setup is somewhat involved, though I've reviewed some setups with hundreds of...
  6. frizzit

    Frequency analysis software for structure borne noise

    I am looking for some data analysis software for calculating the structural mobility/impedance based on modal hammer and random vibration exciter measurements. Meaning I am going to collect a bunch of high frequency data with a bunch of high bandwidth accelerometers and I need some way to...

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