Williams–Landel–Ferry equation

The Williams–Landel–Ferry Equation (or WLF Equation) is an empirical equation associated with time–temperature superposition. The WLF equation has the form where is the decadic logarithm of the WLF shift factor, T is the temperature, Tr is a reference temperature chosen to construct the and C1, C2 are empirical constants adjusted to fit the values of the superposition parameter aT.

Williams–Landel–Ferry equation

The Williams–Landel–Ferry Equation (or WLF Equation) is an empirical equation associated with time–temperature superposition. The WLF equation has the form where is the decadic logarithm of the WLF shift factor, T is the temperature, Tr is a reference temperature chosen to construct the and C1, C2 are empirical constants adjusted to fit the values of the superposition parameter aT.