Do we have to use the 0.2% offset method to calculate the young's modulus of the stress-strain curve of the polymers?

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Naveen Kumar

Young's modulus of polymer can easily be found by finding the slope of stress-strain curve within the proportional limit if the curve is straight line. If curve is not straight line, 0.25% strain can be used to calculate the slope and Young's modulus.

Milad Zeynivandnejad

Thank you, Mr. Naveen Kumar

By adding a trend line in Excel, I found the young's modulus of the stress-strain curve, but I'm looking for references or a source that mentions this discussion.

Any suggestion?

Mariusz Magier

Hello,

You can find very similar discussion on the reserchgate:

https://www.researchgate.net/post/What_is_the_best_method_for_modulus_calculation_for_polymers