Equation for notch sensitivity

Q.  Notch sensitivity (q) is given by the equation _______

where  Kf = fatigue stress concentration factor and  Kt = theoretical stress concentration factor
- Published on 14 Sep 15

a. ( Kf + 1 ) / ( Kt – 1 )
b. ( Kf – 1 ) / ( Kt – 1 )
c. ( Kf + 1 ) / ( Kt + 1 )
d. ( Kf - 1 ) / ( Kt + 1 )

ANSWER: ( Kf – 1 ) / ( Kt – 1 )

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    Discussion

  • Sravanthi   -Posted on 03 Nov 15
    - The degree upto which theoretical effect of stress concentration is actually reached is called as notch sensitivity.

    - Notch sensitivity relates fatigue stress concentration factor with theoretical stress concentration.

    - Notch sensitivity (q) = ( Kf – 1 ) / ( Kt – 1 )

    here, Kf = fatigue stress concentration factor, Kt = theoretical stress concentration

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