A structural component in the form of a wide plate is to be fabricated from a steel alloy that has a plane strain fracture toughness of and a yield strength of 1400 MPa (205,000 psi). The flaw size resolution limit of the flaw detection apparatus is 4.0 mm (0.16 in.). If the design stress is one-half the yield strength and the value of Y is 1.0, determine whether or not a critical flaw for this plate is subject to detection.

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A structural component in the form of a wide plate is to be fabricated from a steel alloy that has a plane strain fracture toughness of and a yield strength of 1400 MPa (205,000 psi). The flaw size resolution limit of the flaw detection apparatus is 4.0 mm (0.16 in.). If the design stress is one-half the yield strength and the value of Y is 1.0, determine whether or not a critical flaw for this plate is subject to detection.

EXPERT ANSWER

use

\(a_{c}=1/\pi*(K_{Ic}/\sigma*Y)^{2}\)

should get something like a=3.9mm