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Self-Healing Fibre Reinforced Composites via a Bioinspired Vasculature

机译：通过生物启发的脉管系统自我修复的纤维增强复合材料

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摘要

This paper demonstrates the first steps towards self-healing composites that exploit a design philosophy inspired by the damage tolerance and self-repair functions of bone. Cracking in either fibre reinforced polymers (FRP) or bone, if left unattended, can grow under subsequent cyclic stresses eventually leading to catastrophic failure of the structure. On detection of cracks, an FRP component must be repaired or completely replaced, whereas bone utilises a series of complex processes to repair such damage. Under normal circumstances, these processes allow the skeleton to continually perform over the lifespan of the organism, a highly desirable aspiration for engineering materials. A simple vasculature design incorporated into a FRP via a "lost wax" process was found to facilitate a self-healing function which resulted in an outstanding recovery (>96%) in post-impact compression strength. The process involved infusion of a healing resin through the vascule channels. Resin egress from the backface damage, ultrasonic C-scan testing, and microscopic evaluation all provide evidence that sufficient vascule-damage connectivity exists to confer a reliable and efficient self-healing function.
机译：本文展示了自修复复合材料的第一步，该复合材料利用了受骨骼的损伤容限和自我修复功能启发的设计理念。如果不注意，纤维增强聚合物（FRP）或骨头中的裂纹会在随后的循环应力下增长，最终导致结构的灾难性破坏。在检测到裂缝时，必须修复或完全更换FRP组件，而骨骼则利用一系列复杂的过程来修复此类损坏。在正常情况下，这些过程可使骨骼在生物体的整个生命周期中持续发挥作用，这是工程材料的一项非常理想的愿望。发现通过“失蜡”工艺将简单的脉管系统设计整合到FRP中可促进自我修复功能，从而使撞击后的抗压强度显着恢复（> 96％）。该过程涉及通过脉管通道注入愈合树脂。树脂从背面损坏，超声波C扫描测试和显微镜评估中流出，均提供了证据，表明存在足够的血管损伤连接性，可赋予可靠且有效的自我修复功能。

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  • 来源
    《Advanced Functional Materials》 |2011年第19期|p.3624-3633|共10页
  • 作者

    Christopher J. Norris; Gregory J. Meadway; Michael J. OSullivan; Ian P. Bond; Richard S. Trask;

  • 作者单位

    University of Bristol Advanced Composite Centre for Innovation and Science Department of Aerospace Engineering Queen's Building, Bristol, BS8 1TR, UK;

    rnUniversity of Bristol Advanced Composite Centre for Innovation and Science Department of Aerospace Engineering Queen's Building, Bristol, BS8 1TR, UK;

    rnUniversity of Bristol Advanced Composite Centre for Innovation and Science Department of Aerospace Engineering Queen's Building, Bristol, BS8 1TR, UK;

    rnUniversity of Bristol Advanced Composite Centre for Innovation and Science Department of Aerospace Engineering Queen's Building, Bristol, BS8 1TR, UK;

    rnUniversity of Bristol Advanced Composite Centre for Innovation and Science Department of Aerospace Engineering Queen's Building, Bristol, BS8 1TR, UK;

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