The complex modulus (elastic component), storage modulus, or Shear Modulus G*G or shear modulus is defined as the ratio of shear stress and shear strain.G’, is the “real” part of the samples the overall complex modulus.
This elastic component indicates the solid like, or in phase, response of the sample being measurement.
It is automatically calculated in the rSpace software from, G’ = G*.cos(delta), where G* = complex modulus and delta = phase angle.
The elastic modulus is commonly compared to the Viscous modulusThe complex modulus (viscous component), loss modulus, or G’’, is the “imaginary” part of the samples the overall complex modulus. This viscous component indicates the liquid like, or out of phase, response of the sample being measurement. viscous modulus which is measured simultaneously for the same sample loaded.