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3 years ago

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Estimate the theoretical fracture strength (in MPa) of a brittle material if it is known that fracture occurs by the propagation

of an elliptically shaped surface crack of length 0.25 mm that has a tip radius of curvature of 0.004 mm when a stress of 1060 MPa is applied.

1 answer:

Annette [7]3 years ago

6 0

Answer:

σ =20700 MPa

Explanation:

Answer is in the following attachment

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A specimen of commercially pure copper has a strength of 240 MPa. Estimate its average grain diameter using the Hall-Petch equat

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Explanation:

hall-petch constant for copper is given by

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