A method of repairing a polymeric composite workpiece. The method includes detecting and identifying a localized area of a polymeric composite workpiece having a defect. A resin is applied to the localized area. The resin includes a plurality of magnetic particles dispersed therein. The resin may include a mixture of nanoparticles dispersed therein, selected from the group consisting of a thermosetting resin, a thermoplastic resin, and mixtures thereof. The method includes introducing radiofrequency electromagnetic radiation adjacent the resin to selectively induce localized heating and/or curing of the resin.