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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
A circular aluminum tube subjected to pure torsion by torques T (see figure) has an outer radius r2 equal to 1.5 times the inner radius r1.
(a) If the maximum shear strain in the tube is measured as 400 ×10-6 rad, what is the shear strain &Y1 at the inner surface?
(b) If the maximum allowable rate of twist is 0.125 degrees per foot and the maximum shear strain is to be kept at 400 ×10-6 rad by adjusting the torque T, what is the minimum required outer radius (r2)min?

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