Time-temperature superposition principle TTSP

Development of Time Temperature-Superposition-Principle (TTSP) Master Curves... 

However, it is also necessary to discuss how broadband bulk, shear and Poisson s ratio are measured. The measurement of the broadband shear modulus is easily accomplished using the time-temperature-superposition-principle (TTSP) and a torsion test. See Kenner, Knauss and Chai (1982) for a description of a simple torsiometer and the measurement of a master curve for a structural epoxy adhesive, FM-73, at 20.5° C. 

The time-temperature and time-pressure superposition principles (TTSP and TPSP)... 

The Schapery method given by Eqs. 10.25 and 10.26 is a mathematical definition of a time-stress-superposition-principle or TSSP that is analogous to the TTSP. Later it will be shown how to obtain stress dependent compliance and modulus master curves from experimental data using TSSP much in the same manner as temperature dependent master curves were determined from experimental data using the TTSP. 

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