StressStrain Curve for PC PS and PE 10 inmin 10000 9000 8000

Stress/Strain Curve for PC, PS, and PE (10 in/min 10000 9000 8000 7000 6000 5000 4000 3000 2000 1000 0.4 0.6 0.8 Strain (inlin)

Solution

PS is not a good substitute for PC. The more the stresses it indicates that the stress bearing capacity of the glass material is more. Hence among yhe three curves, PC has highest stress sustaining capacity and can be used for making glasses. The other two materials have lower life due to less stress bearing capacity.