It is challenging to recover the strength of fiber-reinforced laminates after they have suffered severe damage that normally results in fiber rupture. Most non-invasive repairs can only effectively mend delamination and matrix cracks. Instead of attempting to heal the damaged fiber, this study presents a bioinspired laminate design that diverts fiber damage into matrix split to facilitate recovery even in the event of a catastrophic failure. In this study, hybrid carbon fiber reinforced laminated systems fabricated from alternating layers of thermoplastic and epoxy based prepregs are investigated. Other than being able to sustain higher out-of-plane loads than the common cross-ply laminates, it is also observed that significantly less fiber damage occurs for helicoidal laminates as compared to cross-ply laminates. Helicoidal laminates with small inter-ply angles are able to recover up to 91% of their out-of-plane loading strength whereas only 56% of the strength is restored for cross-ply laminates.

在纤维增强的层压板遭受严重损坏（通常会导致纤维断裂）后，恢复其强度具有挑战性。大多数非侵入式修复只能有效地修复分层和基体裂纹。这项研究没有尝试修复受损的纤维，而是提供了一种生物启发的层压板设计，该设计可以将纤维损坏转移到基质分裂中，即使在灾难性故障的情况下也可以促进恢复。在这项研究中，研究了由热塑性和环氧树脂基预浸料的交替层制成的混合碳纤维增强层压系统。除了能够比普通的交叉层状层压板承受更高的平面外载荷外，还观察到，与交叉层状层压板相比，螺旋层状层压板发生的纤维损伤明显更少。