Poisson ratio
This term is a technical constant used in materials science and structural engineering to quantify the deformation of a solid. It describes the specific relationship between longitudinal compression and lateral expansion, serving as a critical parameter for calculating the elasticity and stability of materials under stress.
As a specialized scientific term, it is used almost exclusively in formal academic, engineering, and physics contexts. It is not used in general conversation and typically appears in the context of stress-strain analysis or the study of isotropic materials.
Meanings
The ratio of the transverse strain to the axial strain in a material, describing the phenomenon where a material tends to expand in directions perpendicular to the direction of compression and contract in directions perpendicular to the direction of stretching.
The engineer calculated the Poisson ratio of the aluminum alloy to determine how much the beam would widen under a heavy vertical load.