Electric resistance measurement–based structural health monitoring with multifunctional carbon fibers: Predicting, sensing, and measuring overload

Polymer matrix composites that also contain carbon fiber reinforcement can be given a secondary function in addition to load bearing due the electrical conductivity of reinforcing fiber. We investigated how measure deformation composite by measuring resistance and indicate its current or previous overload. found bundle initially increases linearly then progressively during testing specimens, finally, when snaps, circuit breaks. have shown cyclic overload exceeding reversible detected measured examining first derivative change with respect deformation. Based on our results, electric measurements either an only fiber-reinforced hybrid used detect possible component unknown history.