Chapter 08, Problem 8.11 A structural component in the form of a wide plate is to...
A structural bridge component in the form of a wide plate is to be fabricated from a steel alloy that has a fracture toughness of 98.9 MPam and yield strength of 860 MPa. The flaw size resolution limit of the flaw detection apparatus is 3.0 mm. If the design stress is one-half of 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.
A structural component in the shape of a flat plate 25.0 mm thick is to be fabricated from a metal alloy for which the yield strength and plane strain fracture toughness values are 545 MPa and 29.6 MPa-m1/2, respectively. For this particular geometry, the value of Y is 1.3. Assuming a design stress of 0.3 times the yield strength, calculate the critical length of a surface flaw. (in mm) incorrect answer 2.222 mm
A large plate is fabricated from a steel alloy that has a plane strain fracture toughness of 75 MPam (68.25 ksi vin.). If the plate is exposed to a tensile stress of 347 MPa (50330 psi) during use, determine the minimum length of a surface crack that will lead to fracture. Assume a value of 0.94 for Y. mm