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Natural frequency from time domain and frequency domain plot

  1. Nov 28, 2013 #1
    Anyone have an idea to find a first and second natural frequency from time domain and frequency domain plot resulting from an accelerometer measuring the vibration in cantilever beam ?

    Thanks very much :)
     
  2. jcsd
  3. Nov 28, 2013 #2

    cepheid

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    Welcome to PF kay10287,

    What have you done so far on this problem? Can you upload a plot of the frequency spectrum of the accelerometer measurement for us? I imagine that the first few resonant modes should be fairly obvious in a plot of the frequency spectrum.
     
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