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What does Griffiths formula measure?

  1. Jan 24, 2016 #1
    What does this formula measure? c= \sqrt{2EY/\pi} This topic is from fracture mechanics. Does this formula tell you how much stress is required to cause the crack to increase?
  2. jcsd
  3. Jan 25, 2016 #2

    Simon Bridge

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    ... no. It is an attempt to model the empirical constant in the relation between the stress at fracture, and the fracture length: \sigma_f/\sqrt a = C##
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