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Quicky: Yield Stress From A Force-Extension Graph Watch

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    How do you find the yield stress JUST from a force-extension graph? (no stress-strain graph)

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      You need to know the cross section area of the sample and calculate it from stress = force/area
      The yield point is the point beyond which the material is no longer elastic and undergoes a marked increase in extension for a small increase in the applied force. It's not observed for many materials. Mild steel is one that does.
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      (Original post by Stonebridge)
      You need to know the cross section area of the sample and calculate it from stress = force/area
      The yield point is the point beyond which the material is no longer elastic and undergoes a marked increase in extension for a small increase in the applied force. It's not observed for many materials. Mild steel is one that does.
      Spank you!
     
     
     
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