A copper bar is of uniform cross-section and is rigidly attached to the walls as shown. The rod is 5ft long and has a cross-sectional area of 2.5 in². At a temperature of 20°F the rod is stress-free in the configuration shown. Determine the stress in the rod when the temperature has dropped to 50°F. Assume that the supports do not yield. For copper, E = 16x10⁶ lb/in² and α = 9.3 x 10^-6/°F.

Q: A plate in equilibrium is subjected to uniform stresses along its edges with magnitude Oxx= 30 MPa…

A: Given data- A plate in equilibrium under uniform stress- σxx=30 MPa,σyy=30 MPa,σzz=0 MPa, Young's…

Q: The minimum strain at failure in tension steel having yield stress modulus E = 200 GPa, as per Limit…

A:

Q: The brass shell (ab = 20.9 × 10-6/°C) is fully bonded to the steel core (as = 11.7 × 10-6°C).…

A: Step 1:Step 2:

Q: A 300 mm Long copper wire of uniform cross-section is pulled in tension so that a maximum tensile…

A: Given that :-   Maximum tensile stress = σ = 270 MPa Length = L = 300 mm Modulus of elasticity = E =…

Q: 2. The Goodman diagram relates oa and om for fatigue failure after a specific number of cycles N₁,…

A: Given,   Fatigue strength under zero mean stress , σa(0) = 0.45 σTS   Tensile strength, σTS = 375…

Q: 160KN 个 160KN 6cm 6cm 40 cm

A:

Q: The stresses on the surface of a cast iron machine component are sx = 85 MPa, =-230 MPa, and fy =…

A:

Q: what differ between plane stress and strain.As like pancel is which of those? （eg,a pancil ,glass…

A: Given data: Difference between Plane stress and Plane strain.

Q: A component made of Aluminium 6061-T651 has an edge crack with length equal to 15 mm, as shown The…

A:

Q: 2. The Goodman diagram relates oa and om for fatigue failure after a specific num of cycles Nf,…

A: Fatigue strength under zero mean stress ,   Tensile strength,  Number of cycles to failure, N = 107…

Q: A constantan alloy strain gauge is mounted on a gold (Young's modulus = 90GPA) cantilever that is…

A: Given data Modulus of elasticity of alloy (E) = 90 GPa  Dimensions of strain gauge  Thickness (t) =…

Material Properties

Construction in civil engineering demands high strength, durability, and longevity. These targets can be achieved by better design and analysis, along with the correct choice of materials. Different materials have different properties and hence, they respond and performs differently under the various condition of external loadings. It is therefore a critical task of an engineer to select the right material based on the property that the material is supposed to function in real-time. When speaking about the property, there are different categories of material properties like chemical property, physical property, mechanical property, electrical property, magnetic property, thermal property, etc. These material properties form the basis of material selection in various applications.