1. Calculate the shear stress of aluminum material with shear modulus of 24 GPa, displace 0.2 cm along the x-direction. The interatomic spacing between the atoms is 3.2 mm. (
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- Common aluminum foil for household use is nearly pure aluminum. A box of this product at a local supermarket is advertised as giving 75 ft°of material (in a roll 304 mm wide by 22.8 m long). If the foil is 0.5 mil (12.7 µm) thick, calculate the number of atoms of aluminum in the roll. Given: Density of Aluminum: p= 2.7 Mg/m³ Molar mass of Aluminum: MAI= 26.98 g/mol Avogadro's Number: AN = 0.6203 (10)²ªA crime scene analyst found out a 10 mm thick metal plate was penetrated by 10 bullets that caused (c) a severe but clean volumetric defect in the form of 10 holes with a diameter of 10 mm each. If the theoretical density of the metal plate is 10 g/cm³, how many metal atoms have been removed from the plate due to the impact? Assume a solid structured metal, with an atomic weight of 100 g/mol, Given the Avogadro constant as 6 x 1023 atom/mol and a = 3.14.In an engineering application, the material is a strip of iron with a fixed crystallographic structure subject to a tensile load during operation. The part failed (yielded) during operation and needs to be replaced with a component with better properties. You are told that two other iron strips had failed at yield stresses of 110 and 120 MPa, with grain sizes of 30 microns and 25 microns respectively. The current strip has a grain size of 20 microns. The diameter of the rod is 1 mm and the load applied is 100 N. What is the yield stress of the new part C and would you recommend it for operation? Select one: a. 140.5, no Ob. 129.5, yes OC. 120.5 MPa, no O d. 133.5 MPa, yes O e. 123.5 MPa, yes
- In an engineering application, the material is a strip of iron with a fixed crystallographic structure subject to a tensile load during operation. The part failed (yielded) during operation and needs to be replaced with a component with better properties. You are told that two other iron strips had failed at yield stresses of 110 and 120 MPa, with grain sizes of 30 microns and 25 microns respectively. The current strip has a grain size of 20 microns. The diameter of the rod is 1 mm and the load applied is 100 N. What is the yield stress of the new part C and would you recommend it for operation? Select one: a.120.5 MPa, no b.140.5, no c.129.5, yes d.123.5 MPa, yes e.133.5 MPa, yesIn an engineering application, the material is a strip of iron with a fixed crystallographic structure subject to a tensile load during operation. The part failed (yielded) during operation and needs to be replaced with a component with better properties. You are told that two other iron strips had failed at yield stresses of 110 and 120 MPa, with grain sizes of 30 microns and 25 microns respectively. The current strip has a grain size of 20 microns. The diameter of the rod is 1 mm and the load applied is 100 N. What is the yield stress of the new part C and would you recommend it for operation? Select one: a. O b. 129.5, yes C. 133.5 MPa, yes e. 120.5 MPa, no d. 140.5, no 123.5 MPa, yesIn an engineering application, the material is a strip of iron with a fixed crystallographic structure subject to a tensile load during operation. The part failed (yielded) during operation and needs to be replaced with a component with better properties. You are told that two other iron strips had failed at yield stresses of 110 and 120 MPa, with grain sizes of 30 microns and 25 microns respectively. The current strip has a grain size of 20 microns. The diameter of the rod is 1 mm and the load applied is 100 N. What is the yield stress of the new part C and would you recommend it for operation?
- Consider dislocations in nickel. If the plastic flow stress is controlled by the stress necessary to operate a Frank-Read source, compute the dislocation density p in the crystal when it is deformed to a point where the resolved shear stress on the slip plane is 100 MPa.A dislocation is anchored between two points 10 μm distant. For a metalwith b = 0.35 nm and G = 30 GPa, compute the shear stress necessary tobow the dislocation into a semicircle.Moving to another question will save this response. uestion 37 Materials with dislocations have lower shear strengths than materials with no dislocations. Is this true or false? Moving to another question will save this response. L
- Ceramics materials have high temperature .. . resistance due to إجابتك The attraction force of the metallic bonds is depended on إجابتك the principal regions of a .. . macrostructure are إجابتك A substitutional defect is introduced when إجابتك The solubility of carbon in austenite is greater than to that of ferrite is due to إجابتك(A A\ Find the toughness for a metal that experiences both elastic and plastic deformation. The modulus of elasticity is (15 x 10 psi), and that elastic deformation terminates at a strain of (0.007). For plastie deformation the values for K and n are (221,000 psi) and (0.15), respectively. Furthermore, plastic deformation occurs between strain values of (0.007) and (0.60). إضافة ملف3. Molybdenum has a BCC crystal structure, an atomic radius of 0.1363 nm, and an atomic weight of 95.94 g/mol. Compute its theoretical density.4. For a brass alloy, the stress at which plastic deformation begins is 345 MPa and the modulus of elasticity is 103 GPa.a. What is the maximum load that may be applied to a specimen with a cross-sectionalarea of 130 mm2 without plastic deformation?b. If the original specimen length is 76 mm, what is the maximum length to which itmay be stretched without causing plastic deformation?