Thin-Walled Shafts in Torsion - Strengths of Materials

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This video shows how to solve for the shear stress due to torsion for thin walled shafts. A comparison between a solid and thin walled shaft showed that stresses developed were similar but the hollow shaft had significantly less material and therefore more efficient.

(0:00) Thin Walled Shafts in Torsion
(2:03) Average Shear Stress Equation
(3:03) Solid vs Thin-Walled Shaft Shear Stress
(7:00) Problem statement: The steel shafts are connected together using a fillet weld as shown. Determine the average shear stress in the weld along section a-a if the torque applied to the shaft is T=60 N-m. Note: the critical section where the weld fails is along section a-a.