A novel aluminium/CFRP hybrid composite with a bio-inspired crossed-lamellar microstructure for preservation of structural integrity

A three-level hybrid metal/in-plane-CFRP/crossed-lamellar microstructure concept for containment applications

“…The microstructures deform stably and retain their structural integrity while very significantly bent (Figures 7(a) The H/CL units undergo large deformations without breaking. Three-point bend tests on hybrid composites in the literature [11] exhibit similar behaviour and show that configurations without crossed-lamellar layers are more brittle and fail at smaller curvatures than crossed-lamellar composites.…”

“…We prototyped the H/CL/QI microstructures based on a procedure outlined in the literature [9,11]. In addition, we prototyped specimens corresponding to the H/CL unit in order to verify the numerical results.…”

“…Previous research into CFRPs with crossed-lamellar microstructures [9,11] has shown that the damage mechanisms of the natural composite can be reproduced in CFRP, and that the damage diffusion can be further enhanced with a microstructure that has inner and outer layers made of a ductile material.…”

Learning from nature: Bio-inspiration for damage-tolerant high-performance fibre-reinforced composites

“…Aiming at further improving the integrity of HPFRP cross-lamellar microstructures, Häsä and Pinho [166], [167] developed hybrid metal/CFRP laminates with the inner and outer layer of the microstructure made of metal (Aluminium [167] and Titanium [166]) and the middle layer, where the majority of the toughening mechanisms typical of cross-lamellar microstructures occur, made of CFRP. 3PB tests in a SEM environment revealed that the presence of the two metal layers promoted the formation of additional failure mechanisms in the middle layer including fibre kinking, diffused fibre failure and splits along the fibre thus further enhancing the energy dissipation capability of full-CFRP cross-lamellar microstructures [167]. Large scale four point bending tests of the metal hybrid laminates showed an extraordinary structural integrity with the hybrid laminates reaching large deflections without incurring into catastrophic failure, as reported in Figure 11 [166].…”

Bioinspired Sandwich Structure in Composite Panels

“…Te bioinspired sandwich construction on an aluminium face sheet with glass fbre reinforcement, epoxy resin matrix, and pet foam core material is the focus of this research [17][18][19][20][21][22][23][24][25][26][27][28][29][30]. Te materials' characteristics were determined experimentally in accordance with ASTM standards [31][32][33][34][35][36][37][38][39][40].…”