Dual conductive network of nickel‐coated carbon fiber woven fabric for indirect and direct lightning strike protection of carbon fiber reinforced polymer composites

Abstract

AbstractIn this study, a dual conductive network of nickel‐coated carbon fiber woven fabrics (Ni‐CFWF) was presented for indirect and direct lightning strike protection (LSP) of carbon fiber reinforced polymer (CFRP) composites. The Ni‐CFWF prepared by electroless plating was bonded to the top surface of a CFRP composite. Excellent electromagnetic interference shielding effectiveness of Ni‐CFWF/CFRP composite was achieved with a value of 92.87 dB in the frequency range 8.2–12.4 GHz, 189.22% greater than that of the pristine CFRP composite. Moreover, the prepared Ni‐CFWF also exhibited a good direct lightning strike (LS) protection performance. The maximum LS damage depth and area of the Ni‐CFWF/CFRP composites were reduced by 21.59% and 6.11% under a simulated lightning current with the peak of 100 kA, respectively. Correspondingly, the residual strength of the Ni‐CFWF/CFRP composites was maintained at 92.65% after LS, demonstrated the LSP effectiveness. Our work provides an effective strategy for the design of a protective system that considers both indirect and direct LSP.