Self Healing of Epoxy Composite for Aircraft's Structural Applications
When one cut himself, it's amazing to watch how quickly the body acts to mend the wound. Immediately, the body works to pull the skin around the cut back together. The concept of repair by bleeding of enclosed functional agents serves as the biomimetric inspiration of synthetic self repair systems. Such synthetic self repair systems are based on advancement in polymeric materials; the process of human thrombosis is the inspiration for the application of self healing fibres within the composite materials. Preliminary results based on flexural 3 point bend test on prepared samples have shown the healed hollow fibre laminate has a healed strength increase of 47.6% compared to the damaged baseline laminate. These results gave us confidence that there is a great potential to adopt such self healing mechanism on actual composite parts like in aircraft’s composite structures.
William Lau, Shang Huai Min, Lee Nam Sua, Ma Jan and Alfred Tok
W. C.K. Tan et al., "Self Healing of Epoxy Composite for Aircraft's Structural Applications", Solid State Phenomena, Vol. 136, pp. 39-44, 2008