Analytical modeling of creep phenomenon of epoxy polymer reinforced with SMA

In the present study, analytical and micromechanical modeling was performed on the creep behavior ofpolymer composites reinforced with shape memory alloys (SMA). The stiffness of SMA wire versus temperature andcreep stiffness of pure polymer versus time were obtained by using Matlab software. Moreover, by using the rule ofmixture, the creep stiffness of composites reinforced with SMA wire was obtained. After verification of the presentmodel, it was observed that using SMA wires in ۰.۶۲% and ۱.۲۴% of volume fraction at high temperature is effectiveand causes a decrease of creep total strain in comparison with pure polymer without pre-strain ۴۹.۹%, ۶۶.۶%, and with۴% pre-strain ۶۳.۴% and ۸۳.۳%, respectively. Reducing the total creep strain increases the creep life of the samples.

کلیدواژه ها:

Polymer composites ، Shape memory alloy ، Creep strain ، Micromechanics ، Pre-strain