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Steel breaking question

  1. Aug 6, 2012 #1

    If I was to heat a steel rod that is brittle...then clamp it at both ends and allow it to cool to a certain lower temperature at which it breaks, how would I go about calculating the breaking stress of the steel. [ I know value of E and alpha]

    Thanks for any help you supply.
  2. jcsd
  3. Aug 6, 2012 #2
    What are your thoughts first?

    Why would it break rather than simply stretch according to Hookes law?

    I mean what is your proposed failure mechanism?
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