Mechanical Properties of Metals - Elastic Deformation

5 important questions on Mechanical Properties of Metals - Elastic Deformation

For metals what is the range of the Young's modulus?

For magnesium 45 GPa and 407 GPa for tungsten.

What is elastic deformation?

When stress and strain are proportional and the plot of these two result in a linear relationship it is called elastic deformation. Elestic deformation is nonpermanent. The slope cooresponds to the modulus of elasticity E (GPa).

What modulus is used when materials are not elastic, when the stress-strain curve is not linear?

Either the tangent modulus or the secant modulus.
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How is the secant modulus calculated?

The secant is determined by drawing a secant between the origin and a specific point on the stress-strain curve.

What is Poisson's ratio?

Poisson's ratio is a parameter defined as the ration of lateral and axial strains.

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