Figure 2

(a) Resin infusion and curing process of hierarchical composites registered by the real-time resistance change of the embedded smart fabric sensor. Infusion stage: 0–28 min (blue curve); Dwelling stage: 28 min – 55 min (green curve); Curing Stage: 55 min – 24 h (red curve); (b) Schematic diagrams of different packing structures of the CNT network in different stages of composite manufacturing.