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Viscoelastic properties of pre- and post-cure cellular rubbers using rheometer

Submitted by farhan3d on

Hi All,

I would like to know if anyone has had the opportunity to investigate cellular rubbers rheology. I am thinking of characterizing the viscoelastic properties of cellular rubber during cure and after cure in the rheometer, using ASTM D6601. What I am expecting is a distorted cellular structure due to very constrained foam expansion during the blowing agent's decomposition, so the results would obviously be different than the ones obtained from a DMTA machine.

Would like to hear from anyone with some rheology / viscoelastic characterization experience.

Elimination of Rigid Body Motion

Submitted by ali_mechanic_64 on

Hello everybody

 I'm doing some experimental research by the help of DIC method, But I have a huge problem that I hope someone can help me about that.  After capturing my datas, I realized that there is a constant value of rigid body motion that is added to my real datas and so that all of my results seem to be wrong. I was wondering if anyone knows how to eliminate this rigid body motion ( translation or rotation) from my datas. 

 

Thanks in Advance