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Shear viscosity parameters estimation software, eXtruemat, accurately fits the model parameters to the experimental viscosity data from a capillary rheometer, or from a cone and plate viscometer. The eXtruemat software determines the viscosity parameters such that the root-mean-square difference between the experimental data and the corresponding prediction from the viscosity model is minimized.

eXtruemat allows Carreau and Cross models for shear thinning behavior of viscosity.

Carreau model:


Cross model:


For temperature dependence of shear viscosity, eXtruemat provides Arrhenius or WLF model.

Arrhenius model:

WLF model:

eXtruemat also generates the material file for the polyXtrue software.

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