A large flat plate is subjected to constant-amplitude uniaxial cyclic tensile an

Question

A large flat plate is subjected to constant-amplitude uniaxial cyclic tensile and compressive stresses of 120 and 35 MPa, respectively. If before testing the largest surface crack is 1.00 mm and the plain-strain fracture toughness of the plate is 35 MPa squareroot m, estimate the fatigue life of the plate in cycles to failure. For the plate, m = 3.5 and A = 5.0 times 10^-12 in MPa and meter units. Assume Y1.3. recommend the materials for the following items. Pumps surgical tools Pressure vessels Aircraft Structures Concrete Determine the Miller indices of directions A, B, and C in Figure.

Explanation / Answer

5

1)Pump:body-cast iron,impeller-brass

2)Surgical tools-Stainless Steel,Inox,Titanium,Tungsten Carbide

3)Pressure vessel-Steel, alloys,concrete, or fiber-reinforced plastics

4)Aluminum alloy,steel,graphite epoxy,titanium,composite materials

5)Concrete-limestone, or granite, along with finer materials such as sand,portland cement

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