Discontinuous fibrous Bouligand architecture enabling formidable fracture resistance with crack orientation insensitivity

Significance Inspired by the survival war between the “spear” of mantis shrimps with Bouligand-type microstructures and the “shield” of abalone with nacreous staggered architectures, we design an architecture, a combination of Bouligand and nacreous staggered structures, which enables excellent fracture resistance with crack orientation insensitivity. The sophisticated hybrid fracture mode due to the competition of energy dissipations between...