Diagram Of Strain. On stress strain curve proportional limit is shown by p. Ductile materials are materials that can be plastically twisted with no crack.
It is a widely used reference graph for metals in material science and manufacturing. A strain gauge is a resistor used to measure strain on an object. Further as the length of the stretched wire increases its diameter decreases.
Stress strain curve which shows the highest stress at which stress and strain are linearly proportional to each other where the proportionality constant is e known as modulus of elasticity.
Where σ is the value of stress e is the elastic modulus of the material s ty is the tensile yield strength of the material and n is the strain hardening exponent of the material which can be calculated based on the provided inputs. This diagram schematically shows the stress strain curve of rubber. A ductile material is one having relatively large tensile strains up to the point of rupture like structural steel and aluminum whereas brittle materials has a relatively. E σε normal stress strain g τγ shear stress strain e elastic modulus or modulus of elasticity g shear modulus or.