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Given: A Plane Stress element n a part made of the 6061-T6 s found to have the following stress: Sigma x = 38.5MPa; sigma y = 68MPa, and tau xy = 34.4MPa The Ultimate Strength s 310MPa The Axial Yield Strength, Sy, of 6061-T6 aluminum is 276MPa, and its Shear Yield Strength, tau y, is 189MPa. Find (a) Factor of Safety using Maximum Principal Stress Criterion (b) Factor of Safety using Tresca Criterion. (c) Factor of Safety using von Mises Criterion.
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