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  1. Kniplamp

    Natural frequency of Shaft

    I am a bit confused here. The right side on the scetch is the motor side, yet you indicated that the fracture is at the non-driven end. If it is at the non driven end, torsion can not be the cause. In that case test the resonance, just do a bump test, take an FFT with an accelerometer on the...
  2. Kniplamp

    Natural frequency of Shaft

    The right side is the side where the motor mounted. Have you considered torsional resonance as a cause. I will show you an example of a shaft from a centrifuge, due to torsional overload. http://files.engineering.com/getfile.aspx?folder=092500fe-e8b1-463d-9e9d-237de42dce2c&file=SHaft_DSC03059.JPG
  3. Kniplamp

    Natural frequency of Shaft

    The question is indeed how the shaft did fail. This sounds to me like a torsional problem. regards, Jos

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