Glossary

Complex Shear Modulus (G*)

Shear modulus is a measurement of the stiffness of a material.

The complex shear modulus (G*) is the ratio calculated by dividing the absolute value of the peak-to-peak shear StressStress is defined as a level of force applied on a sample with a well-defined cross section. (Stress = force/area). Samples having a circular or rectangular cross section can be compressed or stretched. Elastic materials like rubber can be stretched up to 5 to 10 times their original length.stress, τ, by the absolute value of the peak-to-peak shear StrainStrain describes a deformation of a material, which is loaded mechanically by an external force or stress. Rubber compounds show creep properties, if a static load is applied.strain, γ from a dynamic oscillation measurement.