The copper rod AB and steel rod BC are joined at the collar B and fixed connected at their ends. If there is no load in the members when T1 = 17°C, determine the average normal stress in each member when T2 = 47°C. Also, how far will the collar be displaced? The cross-sectional area of each member is 1130 mm2. Copper Steel Elastic Modulus (GPa) 120 200 Coefficient of thermal expansion (1/°C) 17x106 12x10-6 B 1 m 0.6 m

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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.