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What is Engineering Stress and Engineering Strain and how are they determined when talking about testing...

What is Engineering Stress and Engineering Strain and how are they determined when talking about testing Wood, Steel, and Concrete? Provide a written example?

Engineering   Civil-Engineering   
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Answer #1

Engineering stress is the ratio of applied load to the original cross sectional area.

It is also known as nominal stress.

Engineering strain give the degree of deformation of the material which can withstand when considering its original length.

DETERMINATION OFENGINEERING STRESS & STRAIN in wood,steel,concrete is done with the help of a machine which can create load there by generation of stress in the material.

Typically UTM(univeral testing machine) is used,

The material is kept in the machine ,it is subjected to load,the machine will give the load subjected to the machine and elongation shown in the material.

engineering stress=load applied/area of cross section

engineering strain=deformation in dimension/original dimension

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