Self-Healing Fiber-Reinforced Polymer Composites

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Reinforced Polymer Composites Ian P. Bond, Richard S. Trask, and Hugo R. Williams

Abstract Self-healing is receiving an increasing amount of interest worldwide as a method to address damage in materials. In particular, for advanced high-performance fiberreinforced polymer (FRP) composite materials, self-healing offers an alternative to employing conservative damage-tolerant designs and a mechanism for ameliorating inaccessible and invidious internal damage within a structure. This article considers in some detail the various self-healing technologies currently being developed for FRP composite materials. Key constraints for incorporating such a function in FRPs are that it not be detrimental to inherent mechanical properties and that it not impose a severe weight penalty.

Introduction Lightweight, high-strength, highstiffness fiber-reinforced polymer (FRP) composite materials are leading contenders for use in components to improve the efficiency and sustainability of many forms of transport. For example, the widespread use of FRPs is critical to the success of applications such as the Boeing 787 and Airbus A350XWB aircraft. Such materials typically comprise complex architectures of fine (typically