Practical determination of rheological parameters
Hot rheological tests
Article REF: M3009 V1
Practical determination of rheological parameters
Hot rheological tests

Authors : Frank MONTHEILLET, Christophe DESRAYAUD

Publication date: June 10, 2009, Review date: March 6, 2017 | Lire en français

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3. Practical determination of rheological parameters

The coefficients characterizing a material's sensitivity to strain rate or temperature, as well as the parameters for quantifying work hardening and dynamic recovery, are defined in the files and . They can all be determined from stress-strain curves obtained from tests carried out at different strain rates and temperatures.

3.1 Sensitivity to strain rate (m)

This parameter is defined by the partial derivative :

m=∂lnσ0∂lnε
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