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The theoretical stress concentration factor of a notch depends on

  • A.The applied load magnitude
  • B.The number of cycles applied
  • C.The notch geometry alone
  • D.The material alone

Answer: C

It is a purely elastic, geometric quantity, being the ratio of peak local stress to nominal stress. The fatigue notch factor is smaller, because real materials redistribute stress locally, and the difference is captured by the notch sensitivity.

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