Question: A composite inverted T-section is composed of graphite/epoxy (Ec = 20 x 106 lb/in2) and aluminum (Ea = 10 x 106 lb/in2) where the dimensions

A composite inverted T-section is composed of graphite/epoxy (Ec = 20 x 106 lb/in2) and aluminum (Ea = 10 x 106 lb/in2) where the dimensions include the base ( b = 3.3 inch ) and height ( h = 5.6 inch). Calculate the composite bending stiffness (EIyy) measured about the lower surface (y-axis). (units: lb-inch2)

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