Multifunctional polymer-matrix structural composites

Polymer-matrix composites with continuous carbon fiber reinforcement are widely used for lightweight structures such as airframes. Non-structural functions such as strain/stress sensing, temperature sensing, and damage monitoring have been attained in these structural composites by exploiting the resistive, piezoresistive and thermoelectric behavior. These functions are important for smart structures, vibration control and hazard mitigation. The multifunctionality of the structural material reduces the need for embedded devices, thus saving cost, enhancing durability, increasing the functional volume and avoiding mechanical property loss.