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Result of Rubber Tests  


jamal.mousavi
Posts: 8
(@jamal.mousavi)
Active Member
Joined: 5 years ago

Hello Dear Friends,

I want to ask a question about results of rubber tests. I have some results for uniaxial tension test. And .txt file includes displacement,force,time and ext.1 values. Firstly,

- I can calculate engineering stress because I have initial conditions. But how can I calculate true stress and strain values? Can you help me about this issue?

- In test results, what is mean that ext.1.

Thank you so much for your answers

Best regards.

2 Replies
Jorgen
Posts: 3874
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(@jorgen)
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Joined: 11 months ago

To calculate the true stress you need to know the transverse strain so that you can determine the current cross-sectional area.

Im not sure what ext.1 means.

-Jorgen

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jamal.mousavi
Posts: 8
(@jamal.mousavi)
Active Member
Joined: 5 years ago

[QUOTE=Jorgen,13502]To calculate the true stress you need to know the transverse strain so that you can determine the current cross-sectional area.

Im not sure what ext.1 means.

-Jorgen[/QUOTE]

Thank you Dear Jorgen for your answer.

I learned ext.1, it means that extension of signed distance for Digital Image Correlation. ( For uniaxial tension)

And I found actual cross-sectional using by stretch ratio (Lfinal/Lorginal).

Best Regards

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