Non-intrusive health monitoring of infused composites with embedded carbon quantum piezo-resistive sensors

Here we present a new generation of nanocomposite quantum resistive sensors (QRS) that can be homogeneously introduced in FRP to sense their health without sacrificing their integrity. QRS as thin as 1.5 μm, have been implemented on E-glass fibres (GF) before infusion of epoxy resin (EP). They allow to follow both strain and damages in both elastic and plastic domains up to failure with high sensitivity, i.e., gauge factors (GF) up to 6.