If the plate thickness in the previous problem were 1 cm, would the thickness be sufficient for a JIC test? Assume these material properties: E = 205 GPa, v = 0.25.

A material has a linear elastic perfectly plastic stress-strain.  A cylindrical specimen of that material having an initial length of 35 mm and a tadius of 7 mm is pulled until it elongates 0.8mm. a.  Calculate the stain and the corresponding stress at that elongation value. b.  Afterward, the specimen is released to zero stress level, how does the final length of the specimen compare with its original length?  How much plastic deformation remains if it exists?

Machining of SiC produced surface flaws of a quarter elliptical crack geometry. The flaws that were generated have dimensions a = 1 mm, width w = 107 mm, and c = 5 mm, and the thickness of the specimen is B = 21 mm. Calculate the maximum stress that the specimen can withstand in tension. KIc = 15 MPa m1/2

Determine the single uniformly distributed load in the x direction that would produce the same deformation in the y direction as the original loading for a given rectangular block with the following data: 4 inches long in the x direction, 2.5 inches long in the y direction, and 3.5 inches long in the z direction. The block is subjected to a triaxial loading of three uniformly distributed forces as follows: 52 kips tension in the x direction, 68 kips compression in the y direction, and 49 kips tension in the z direction. Given v = 0.28 and E = 30 x 10° psi, O a. 265.23 kips O b. 255.80 kips Oc 220.25 kips O d. 246.56 kips

Consider a metal rod with a critical resolved shear stress of 40 MPa for a specific crystallographic plane (hkl). The angle between the normal to the plane and the applied force is 30 degrees, and the angle between the slip direction and the force is 15 degrees. Two force levels of F1 = 75 N and F2 = 40 N is applied. The cross-sectional area of the rod is 1 mm^(2). Will the slip initiate at the two force levels? Select one: a. F1: Yes, F2: No b. F1: No, F2: No OC. F1: Yes, F2: Yes Od. F1: No, F2: Yes

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Two links are connected by a single pin and a tensile force F is applied. The links and the pin are made from Aluminum(sigma_y = 35ksi and T_y = 20ksi). The dimension of the link is 5 inch high by 0.5 inch thick. Find the optimal diameter for the pin and the maximum force,F that can be applied to the linkage before incuring permanent deformation.

Case Study Calculate the Tensile Toughness Tensile toughness measures the total energy absorbed prior to fracture and is different from fracture toughness and impact toughness. Fracture toughness measures the resistance to fracture when a flaw (i.e. crack) is present in the material. Since it is nearly impossible and costly to manufacture materials with zero or near zero defects, fracture toughness is a major consideration for all structural materials. Impact toughness measures a materials ability to withstand an impact blow (i.e. high strain rates) and is particularly important in assessing the ductile-to-brittle transition behavior (more details later). Impact toughness is also commonly referred to as notch toughness. The tensile toughness can be estimated using the stress-strain curve by measuring the area under the curve (both the elastic and plastic regions). Tensile Toughness = f Stress, σ Ty- Ey Efracture ETS Ur Ey Efracture o de = U₁ + SETS o de + Sefracture o de Ey Ey o de =…

What is the maximum value of KIc as per LEFM that can be determined from experiments on a 20 mm thick plate? yield strength= 500 MPa, E= 210 GPa, poission ratio=0.3.

Answer ASAP please