What Is Young’s Modulus In Simple Terms?
What Is Young’s Modulus In Simple Terms?
Young’s Modulus, also known as Elastic Modulus or Tensile Modulus, is a metric used to determine the linear elasticity of solids like rods and wires.
It measures the relationship between stress (force per unit area) and strain (proportional deformation) and is commonly used among other elasticity measurements such as Bulk modulus and shear modulus.
It is named after British scientist Thomas Young and is only applicable to linear elastic materials which regain their original shape when the applied pressure is removed.
What Is Young’s Modulus SI Unit?
The Young’s modulus, named after Thomas Young but developed by Leonhard Euler and first experimentally measured by Giordano Riccati, is a measure of the stiffness of a material when under lengthwise stress.
It is commonly expressed in gigapascals (GPa) due to its large values. Materials with a high Young’s modulus, such as aluminum, are less elastic and increase in length more slowly under pressure, while materials with a low Young’s modulus, such as Silly Putty, are more elastic and increase in length quickly under pressure.
What Is Hooke’s Law And Young’s Modulus?
Hooke’s law states that the force applied to an object is directly proportional to the induced strain, and is commonly applied to skin.
Young’s Modulus, a coefficient that measures the stiffness of skin and its ability to deform, can be determined by measuring the stress and strain on the skin during compression.
What Is Young’s Modulus And Poisson’s Ratio?
Young’s modulus is a measure of the stiffness of a material, which means how much elastic force it takes to stretch or compress a given object.
Poisson’s ratio refers to the ratio of transverse (lateral) strain to axial (longitudinal) strain in an object. Young’s modulus describes the relationship between stress and strain when an object is pulled or compressed along its length, whereas Poisson’s ratio describes how much it shrinks when it is stretched or squeezed from its sides.
Essentially, Young’s modulus defines how stiff an object is in response to stretching forces, while Poisson’s ratio defines how elastic the material responds to lateral pressure.
How Do You Calculate Young’s Modulus?
Young’s modulus is a measure of the elasticity or stiffness of a material and can be calculated by dividing the stress applied to a material by the strain that is produced.
To calculate Young’s Modulus, start by gathering information on the original length of the material under test (Lo) and its width or cross-sectional area (A). Next, find out the stress value in units such as Newtons per square meter (N/m2).
Lastly, divide this Stress value by the Strain value. The result will be Young’s Modulus in units such as Pascal (Pa).
