What should be the minimum shaft diameter

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Reference no: EM131865307

Questions -

1) For a power transmission system, a solid steel shaft is required to transmit a torque of 2640 Nm. The limiting factor is that the twist of the shaft should not exceed 5 degrees for each metre of the shaft length. The shear modulus G is 75 GPa for this steel. What should be the minimum shaft diameter?

2) An aluminium plate loaded in tension contains a through-thickness edge crack with a/W ratio of 0.37. It is loaded with a remote tensile stress of 95 MPa. If the toughness of the aluminium is 25 MPa √m. Determine the critical crack length at which fracture will occur? (You will need to use the Y calibration curve illustrated below)

3) Rearrange the following equation to solve for a;

K_I = Yσ√(πa)

4) Rearrange the following equation to solve for σ;

K_I = Yσ√(πa)

5) A wide plate of steel with a toughness of 80 MPa √m is loaded with a remote tensile stress. It contains an edge crack of length a = 24 mm. If the plate can be modelled as an infinite plate where Y = 1.12, at what stress will this crack cause a brittle fracture?

Reference no: EM131865307

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