Effect of thin-ply on damage behaviour of continuous and discontinuous carbon fibre reinforced thermoplastics subjected to simulated lightning strike

A new numerical method for the tensile property analysis of discontinuous fiber-reinforced thermoplastics

“…The thickness of the two models is identical as well as the number of plies. The size of the in-plane varies to form the small model (6 Â 6 Â 2 mm 3 ) and the large model (35 Â 50 Â 2 mm 3 ). Five numerical models with different reinforcement distributions are also used for each size, as shown in Figure 8.…”

“…1,2 Relevant scholars have carried out a lot of research on the influencing factors of mechanical properties, including feature size, constituent properties, and molding process. [3][4][5][6][7][8][9][10][11][12] Nishikawa et al 13 found that the fiber length affects the nonlinearity of the stress-strain relationship of DCFRTP. Long but discontinuous fibers effectively increase the yield point of the composite.…”

Thin-ply polymer composite materials: A review

“…When subjected to simulated lightning strikes, thin plies reportedly contribute to the reduction of lightning-induced damage, specially bulk damage, including delamination (Fig. 28) [64]. This lightning damage suppression capability results from the lower in-plane and out-of-plane electrical resistivity of laminates with thin plies [64,172].…”

“…This lightning damage suppression capability results from the lower in-plane and out-of-plane electrical resistivity of laminates with thin plies [64,172]. The applied lightning current seems to flow not only in the first, top ply, but also in the underlying plies when these are sufficiently thin, restricting more efficiently the resin vaporisation area due to lower electrical anisotropy as compared with laminates with thicker UD tapes [64]. Moreover, after being subjected to a lightning strike, laminates with thinner plies exhibit higher residual strength [65].…”

“…Moreover, after being subjected to a lightning strike, laminates with thinner plies exhibit higher residual strength [65]. This favours the application of these laminates on advanced, safety-critical composite structures that may be subjected to lightning strikes [64].…”