Poisson's ratio

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Poisson's ratio

n
(General Physics) a measure of the elastic properties of a material expressed as the ratio of the fractional contraction in breadth to the fractional increase in length when the material is stretched. Symbol: μ or ν
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They can be determined knowing the Poissons ratios, from nondestructive methods, from the ratio of pure modulus of elasticity (E) to G, and from bending tests at different span-to-depth ratios of the member.