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What is elastic modulus?

Updated: 8/11/2023
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15y ago

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In a tensile test, a specimen of material is pulled apart slowly until it breaks. Measurement is continuously taken of the increase in length and the force applied. The increase in length is normalized by dividing it by the original length, and the force is converted to stress by dividing it by the original cross-section area of the specimen. The results are plotted on a graph, called a stress-strain curve, with the stress on the Y axis and the strain on the X axis. The initial part of the curve is usually linear. That linear section is called the elastic region. The slope of the line in that area, which is stress divided by strain in the elastic region, is the elastic modulus.

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9y ago

Elastic properties are what determines how much a material will compress under a certain amount of pressure. The change ratio is called the bulk modulus.

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Is young's modulus storage modulus?

The Young modulus and storage modulus measure two different things and use different formulas. A storage modulus measures the stored energy in a vibrating elastic material. The Young modulus measures the stress to in still elastic, and it is an elastic modulus.


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