When prospecting for land, mining companies use drills to extract ground samples from the ground. The drill bit is a hollow cylinder made of highly shear-resistant steel. If the bit has an outside diameter of 10.16 cm, an inside diameter of 5.08 cm, a length of 3.05 m, it is made of AISI 1095 steel and it undergoes a torque of 356 Nm while drilling (Use the table if necessary) calculate: (a) the maximum stress in the roving Answer: 1.84 MPa (b) the twist angle in degrees. Answer: 0.08

Q: A hydraulic punch press is used to punch a slot in a 0.40-in.-thick plate, as illustrated in the…

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Q: S1:Q1 a) Figure 1a provides dimensions of a test sample that is being subjected to a tensile stress.…

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Q: Q- The minimum shear stress in a hollow shaft of outer diameter 40 mm and thickness 5 mm subjected…

A: outer diameter 40 mm  thickness 5 mm torque = 10 Nm.

Q: A transmission shaft made of steel having ultimate strength 500 MPa and yield strength 320 MP is…

A: Given data : Ultimate strength of steel shaft = 500 MPa Yield Strength = 320 MPa Endurance strength…

Q: Q.9 A 1.25 cm diameter steel bar is subjected to a load of 2500 kg. The stress induced in the bar…

A: Diameter d=1.25 cm Load P=2500 kg

Q: : Calculate and sketch the normal stress distribution acting over the cross section at section a-a.…

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Bars

In civil engineering, bars refer to steel reinforcement bars or rebars. These are structural members primarily used for reinforcement purposes in masonry works. A bar is characterized by its cross-sectional area, which is negligible compared to its length. Bars are usually manufactured by steel which is uniform throughout the length, or by meshing multiple steel wires. Other materials of the bar include carbon steel, glass fiber, carbon fiber, and basalt fiber. The reinforcing bars are coated with epoxy resins and other materials to enhance some of their properties including corrosion resistance.