The final step in creep analysis is

The final step in creep analysis is determining the uniaxial |E*| dynamic modulus mastercurve, using the fitted GPL parameters as inputs. Time alone cannot be used to judge the stiffness of materials. One must look at more comprehensive rheological data through interconversion between time and frequency. Interconversion is necessary because nanoindentation tests are performed in the time domain, whereas complex modulus mastercurves are generally presented in the frequency domain. Frequency is commonly used as a convenient surrogate for temperature, although greater emphasis is placed on temperature considerations for the intrinsic understanding of material response.