Question

What is the importance of elastic after effect?

Answer 1

When a elastic body is stretched and applied deforming force is removed then the body is expected to return to its original configuration instantaneously. But sometimes some materials take some time to return to its original configuration. This temporary delay in achieving its original configuration is termed as elastic after effect. This elastic after effect is very short for quartz fiber. But elastic after effect is more for glass. Therefore quartz fiber is used in galvanometer.

Answer 2

Elastic After Effect:-

• When an elastic material is stretched and applied deforming force is removed then it takes some time to return to its original shape and size.

• The time taken by materials to regain their original shape and size after deforming force is removed, is termed as elastic after effect.

• The elastic after effect is short for quartz fiber and more for glass fiber.

Elastic Fatigue:-

• The temporary loss in strength of a material due to repeated loading and unloading of stress is termed as elastic fatigue.

• when a wire is a bent number of times at the same point, it cracks and finally breaks.

• The wire is said to be in the state of elastic fatigue.