A cylindrical steel pressure vessel with yield strength of 360 MPa is subjected to cyclic loading...

Transcribed Image Text:

A cylindrical steel pressure vessel with yield strength of 360 MPa is subjected to cyclic loading with a maximum internal pressure of 1.5 MPa. The critical stress intensity factor of the steel is, K₁c = 20 MPa m¹/2. If the radius of the vessel is 1 m, estimate the minimum thickness of the vessel wall to avoid fast fracture. Assume, a = 0.72 for semi-elliptical surface cracks parallel to cylinder axis. Suppose a residual tensile stress of 80 MPa is developed in the steel walls during the fabrication of the pressure vessel. What would be its effect? Assume constant A = 2.1 x 10-7 and m = 2.25. A cylindrical steel pressure vessel with yield strength of 360 MPa is subjected to cyclic loading with a maximum internal pressure of 1.5 MPa. The critical stress intensity factor of the steel is, K₁c = 20 MPa m¹/2. If the radius of the vessel is 1 m, estimate the minimum thickness of the vessel wall to avoid fast fracture. Assume, a = 0.72 for semi-elliptical surface cracks parallel to cylinder axis. Suppose a residual tensile stress of 80 MPa is developed in the steel walls during the fabrication of the pressure vessel. What would be its effect? Assume constant A = 2.1 x 10-7 and m = 2.25.

Answer rating: 100% (QA)

The detailed ... View the full answer