Draw and explain the stress strain curve of a polymeric material.

Explanation:

The stress strain curve for polymer describe by following type

1.Ductile

 These material have good ductility and showing the yield point in the stress strain curve.These material shows necking before fracture point.These materials are steel ,aluminium etc

2. Brittle

 These material are hard and does not showing yield point.They break without showing any indications.These materials are glass,cast iron etc.

3. Elastomer

 These materials are showing property like rubber.Steel is more elastic as compare to rubber.

In the diagram different type of polymeric materials are showing.

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