State any two uses of each of the following. (i) Stress-strain diagram (ii) S-N curve

State any two uses of each of the following. (i) Stress-strain diagram (ii) S-N curve
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1 Answer

Answer :

(i) Stress-Strain diagram:

1. Stress-strain diagram is used to find out strength, elasticity, stiffness, ductility of material.

2. From stress-strain diagram, elongation of material is found out.

3. It is used to find out yield points for material in tension/compression test.

4. It is used to find out toughness.

(ii) S-N curve: 

1. It is used to study the effect of fatigue of material.

2. It is used to find the Effect of Loading on Endurance Limit—Load Factor.

3. It is used to find out Effect of Surface Finish on Endurance Limit-Surface Finish Factor.
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