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Asked Nov 30, 2019
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Why is the theoretical strength of materials higher than the observed strength?

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Expert Answer

Step 1

The theoretical strength of material is higher than the observed strength the reason for this is that the actual material have some defects in it in the form of dislocation due to which the deformation of crystal structure occurs at a much lower stress level than it is indicated. These defects decrease the subsequent strength of the material.

Step 2

These dislocation in some respects also helps to control the mechanical properties of the material like if no dislocation were present in material like iron than it would be brittle and the material could not be...

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Mechanical Engineering

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