[3] 2. A rectangular block of aluminum 30 mm x 60 mm x 90 mm is placed in a pressure chamber and subjected to a pressure of 100 MPa. If the modulus of elasticity is 70 GPa and Poisson's ratio is 0.333, what will be the decrease in the longest side of the block, assuming that the material remains with the linear elastic regions? What will be the decrease in the volume of the block? Material Copper Aluminum alloy Steel Fy (MPa) 248 255 448 Brass alloy 345 Note: E = elastic modulus, Fy = yield strength, Fu= ultimate strength E (GPa) 110 70 207 101 Fu (MPa) 289 420 551 420

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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.