Question

A large plate is fabricated from a steel alloy that has a plane strain fracture toughness of 70 MPa m$^{1/2}$. If the plate is exposed to a tensile stress of 1200 MPa during use, determine the minimum length of a surface crack that will lead to fracture. Assume a value of 1 for Y. If a surface crack is found with dimension of 0.01 m, will the plate fail? Show all your work/steps (add your work to pdf file to be submitted within 10 minutes after finishing the midterm)

          A large plate is fabricated from a steel alloy that has a plane strain fracture toughness of 70 MPa m$^{1/2}$. If the plate is exposed to a tensile stress of 1200 MPa during use, determine the minimum length of a surface crack that will lead to fracture. Assume a value of 1 for Y. If a surface crack is found with dimension of 0.01 m, will the plate fail? Show all your work/steps (add your work to pdf file to be submitted within 10 minutes after finishing the midterm)

$A large plate is fabricated from a steel alloy that has a plane strain fracture toughness of 70 MPa m^1/2. If the plate is exposed to a tensile stress of 1200 MPa during use, determine the minimum length of a surface crack that will lead to fracture. Assume a value of 1 for Y. If a surface crack is found with dimension of 0.01 m, will the plate fail? Show all your work/steps (add your work to pdf file to be submitted within 10 minutes after finishing the midterm)$

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