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Predicting crack propagation in the shaft dovetail of a generator rotor

  • US 7,711,664 B2
  • Filed: 12/27/2006
  • Issued: 05/04/2010
  • Est. Priority Date: 12/28/2005
  • Status: Expired due to Fees
First Claim
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1. A generator rotor crack propagation prediction system, comprising:

  • memory means;

    interface means that inputs data and outputs results;

    stress calculation means that calculates the mean stress in a generator rotor shaft dovetail and stores the stress in the memory means;

    factor range calculation means that calculates the stress intensity factor range of shaft dovetail crack and stores the stress intensity factor range in the memory means; and

    crack propagation amount calculation means that calculates an amount of the shaft dovetail crack propagation from the mean stress and stress intensity factor range stored in the memory means, and crack data.

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