ScienceTomorrow has developed a method based on spark discharge for joining and repair of composites. In this method, a graphite fiber is laid on the composite surfaces to be joined. The parts are held together under pressure and a high amperage pulse current is passed through the graphite fiber. The distributed pulse current creates local discharge and dangling bonds. The pressure and heat cleans the surface and causes the dangling bond to join, causing both the surfaces to join. This method can be used for joining composites in manufacturing as well as for repairing broken composite parts.