Youngs+Modulus.

=Youngs Modulus. = = = "The stiffness of a material".


 * [|Youngs Modulus] is a measure of the stiffness of a material.

It can be calculated using the following formula:


 * Youngs Modulus = Stress/Strain **

The stress/strain graph below shows what happens. || ||

When a material behaves **__elastically__**, if the load is removed the material will return to its original length. After the **__yield point__** the material will deform **__plastically__** and will not return to its original length.

Tensile strength test.

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