Investigation on the application of restrained recovery of prestrained SMA wires embedded in self-healing composites

Energy absorbance is a key factor for structures exposed to impact loading. Although polymer-basedcomposites can absorb a good amount of energy, since their matrix is too brittle, they cannot be used over and over. Onesolution is to use a self-healing matrix that can repair its cracks in presence of compressive force in the determinedtemperature. The following studies show that embedding pre-strain SMA wires and activating them induces a largecompressive force in polymer-based composite samples. This compressive force is used in terms of a resistance momentagainst impact load and on the other hand as a compressive actuator to start the healing process of the self-healing matrixafter the matrix cracking.

کلیدواژه ها:

Polymer-based Composites ، Self-healing ، SMA ، Pre-strain ، Induced force