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Unformatted text preview: stress and strain (which is the slope of the curve between the origin and the proportional limit). From T.A. Philpot, Mechanical Properties of Materials: 3.2 The StressStrain Diagram, in Mechanics of Materials: An Integrated Learning System , John Wiley & Sons, 2008, pp. 4649. The yield strength is defined as the stress that will induce a specified permanent set (i.e. plastic deformation) in the material, usually 0.05% or 0.2%. The elastic limit is the largest stress that a material can withstand without any measurable permanent strain remaining after complete release of the stress. The modulus of elasticity is the ratio between normal stress and normal strain, which is the slope of the initial, straightline portion of the stressstrain diagram....
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 Spring '11
 Zuo

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