Composite Beams - Bending Stress - Strengths of Materials

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This video shows how to solve for the bending stress of a composite beam. A composite beam is a beam that is made of different materials which of course has different material properties and therefore the bending stress equation cannot be used. In this case, a transformation factor is used to convert the composite beam into a homogeneous beam of the same material to still utilize the same bending stress equation.

(0:00) Composite Beam – Bending Stress
(3:45) Transformation Equations
(6:00) Problem statement: A wood beam is reinforced with steel straps at its top and bottom as shown. Determine the maximum bending stress developed in the wood and steel if the beam is subjected to a bending moment of M = 5 kN-m. Take Ew = 11 GPa and Est = 200 Gpa