The composite beam shown is formed by bonding together a brass rod and an aluminium rod of semicircular cross- sections. The modulus of elasticity is 100 GPa for the brass and 70 GPa for the aluminium. Knowing that the composite beam is bent about a horizontal axis by couples of moment 900 N-m, determine the maximum stress (a) in the brass, (b) in the aluminium. 20 mm Brass Aluminium

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Material Properties

Construction in civil engineering demands high strength, durability, and longevity. These targets can be achieved by better design and analysis, along with the correct choice of materials. Different materials have different properties and hence, they respond and performs differently under the various condition of external loadings. It is therefore a critical task of an engineer to select the right material based on the property that the material is supposed to function in real-time. When speaking about the property, there are different categories of material properties like chemical property, physical property, mechanical property, electrical property, magnetic property, thermal property, etc. These material properties form the basis of material selection in various applications.