7. While in service, a ceramic material develops a submicron crack in the [121] directions which...
7. While in service, a ceramic material develops a submicron crack in the (121) directions which traverses 100 unit cells. Assuming the crack tip radius of curvature is 0.2 nm, what stress develops at the crack tip when a tensile stress of 20 MPa is applied? a. -0.367 nm. Om = 2007a/pc
7. While in service, a ceramic material develops a submicron crack in the (121) directions which traverses 100 unit cells. Assuming the crack tip radius of curvature is 0.2 nm, what stress develops at the crack tip when a tensile stress of 20 MPa is applied? 2. - 0.367 nm. Om = 2007a/Pc
(10) 7. While in service, a ceramic material develops a submicron crack in the [121] directions which traverses 100 unit cells. Assuming the crack tip radius of curvature is 0.2 nm, what stress develops at the crack tip when a tensile stress of 20 MPa is applied? 2. = 0.367 nm. Om = 2001 a/c
3. A square rod of 500 mm long with a width of 10 mm is subjected to a load of 40000 N., The stress-strain behavior is shown in the Figure below. Based on the information, please answer the following questions: (Note: Pa = N/㎡, J = Nm) (a) Compute the applied stress (5 points). 70 Tensile strength 450 MPa (65.000 ps) -60 400 103 ps MPa 40厂 50 300 40 Yield strength30 250 MPa (36.000 ps) 200 100 20 10...