The stiffened top skin of a wing structure is modelled as a panel has simply supported edges as shown in the figure below. Oc a The sheet is 4.7 mm thick and the stringers are spaced at b 0.6 m. Assume the dimension of the panel in spanwise direction is much longer than the chordwise direction. The material constants are: E 70 x 10 N/m2, Poisson's ratio v0.34. Determine the spanwise stress at which the sheet between the stringers will begin to buckle. Give your answer in MPa to three decimal places.

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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.