Self-healing of damage in fibre-reinforced polymer-matrix composites
Open Access
- 20 February 2007
- journal article
- Published by The Royal Society in Journal of The Royal Society Interface
- Vol. 4 (13), 381-387
- https://doi.org/10.1098/rsif.2006.0209
Abstract
Self-healing resin systems have been discussed for over a decade and four different technologies had been proposed. However, little work on their application as composite matrices has been published although this was one of the stated aims of the earliest work in the field. This paper reports on the optimization of a solid-state self-healing resin system and its subsequent use as a matrix for high volume fraction glass fibre-reinforced composites. The resin system was optimized using Charpy impact testing and repeated healing, while the efficiency of healing in composites was determined by analysing the growth of delaminations following repeated impacts with or without a healing cycle. To act as a reference, a non-healing resin system was subjected to the same treatments and the results are compared with the healable system. The optimized resin system displays a healing efficiency of 65% after the first healing cycle, dropping to 35 and 30% after the second and third healing cycles, respectively. Correction for any healability due to further curing showed that approximately 50% healing efficiency could be achieved with the bisphenol A-based epoxy resin containing 7.5% of polybisphenol-A- co -epichlorohydrin. The composite, on the other hand, displays a healing efficiency of approximately 30%. It is therefore clear that the solid-state self-healing system is capable of healing transverse cracks and delaminations in a composite, but that more work is needed to optimize matrix healing within a composite and to develop a methodology for assessing recovery in performance.Keywords
This publication has 12 references indexed in Scilit:
- A self-healing thermosetting composite materialComposites Part A: Applied Science and Manufacturing, 2007
- ‘Bleeding composites’—damage detection and self-repair using a biomimetic approachComposites Part A: Applied Science and Manufacturing, 2004
- Microcapsule induced toughening in a self-healing polymer compositeJournal of Materials Science, 2004
- Self-healing structural composite materialsComposites Part A: Applied Science and Manufacturing, 2003
- New Thermally Remendable Highly Cross-Linked Polymeric MaterialsMacromolecules, 2003
- A resistance-based damage location sensor for carbon-fibre compositesSmart Materials and Structures, 2002
- Removable foams based on an epoxy resin incorporating reversible Diels–Alder adductsJournal of Applied Polymer Science, 2002
- A smart repair system for polymer matrix compositesComposites Part A: Applied Science and Manufacturing, 2001
- Prediction of the glass transition temperatures for epoxy resins and blends using group interaction modellingPolymer, 2001
- Procedures developed for self-repair of polymer matrix composite materialsComposite Structures, 1996