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A bar of diameter 30mm is subjected to a tensile load such that the measured extension on a gauge length of 200mm is 0.09mm and the change in diameter is 0.0045mm. Calculate the Poissons ratio?

A bar of diameter 30mm is subjected to a tensile load such that the measured extension on a gauge length of 200mm is 0.09mm and the change in diameter is 0.0045mm. Calculate the Poissons ratio? Correct Answer 1/3

Longitudinal strain = 0.09/200 Lateral strain = – 0.0045/30 Poissons ratio = – lateral strain/ longitudinal strain = 0.0045/30 x 200/0.09 = 1/3.

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