Aerospace Engineering > GATE 2011 > Material Selection
A thin-walled (thickness << radius), hollow shaft of length 1 m and mean radius, R = 5 cm has to be designed such that it can transmit a torque, T = 7 kN·m.
A survey of different commercially available materials was made and following data was obtained from the suppliers
(E: Young’s modulus, τy: yield stress in shear, ρ: density):
Which of the above materials would you choose such that weight of the shaft is minimum?
Correct : b
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