Long-term shear modulus of short fibre-reinforced polyester through the time-temperature superposition principle

Creep and dynamic mechanical behavior of PP–jute composites: Effect of the interfacial adhesion

“…To predict the long term behavior from short term measurements, it is generally assumed that the polymer does not change its structure with time, so the TTS principle holds. In the case of composite or complex materials, this assumption cannot be taken as valid a priori, but instead its applicability to evaluate particulate, laminate and fiber reinforced composites [23,[34][35][36][37] was investigated in recent years, with satisfactory results. On the other hand, it was suggested that the existence of imperfections and discontinuities in the material can enhance its nonlinear viscoelastic response [38].…”