Before revision: Poisson's ratio of a material defines the ratio of transverse strain ( x direction) to the axial strain ( y direction) In materials science and solid mechanics, Poisson's ratio (nu) is a measure of the Poisson effect, the deformation (expansion or contraction) of a material in directions perpendicular to the specific direction of loading.
After revision: Poisson's ratio of a material defines the ratio of transverse strain ( direction) to the axial strain ( direction) In materials science and solid mechanics, Poisson's ratio (nu) is a measure of the Poisson effect, the deformation (expansion or contraction) of a material in directions perpendicular to the specific direction of loading.