The inclusion of latent catalytic healing agents (CHAs) during layup of fibre-reinforced polymer (FRP) composite specimens yields a functionalised composite material with the capability to self-repair. Strategies for preventing the reaction of CHAs with prepreg resins during curing of the host material are explored. The inclusion of catalyst as an interleave on the composite mid-plane was found to be detrimental to the fracture toughness of the double cantilever beam (DCB) specimens. A potential application for this effect includes damage redirection, whereby propagating damage is steered into self-healing features. This will be an area of interest for future investigation. Upon failure of the composite, healing is achieved by addition of a low-viscosity epoxide monomer and heating the material to activate the curing agent. Specimens featuring embedded Sc(OTf) 3 healed for 2 hours at 200 ?C showed a mean recovery in peak load of 79%.
|Title of host publication||ASME 2014 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2014|
|Publisher||American Society of Mechanical Engineers (ASME)|
|Publication status||Published - 1 Jan 2014|
|Event||ASME 2014 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2014 - Newport, United Kingdom|
Duration: 8 Sep 2014 → 10 Sep 2014
|Conference||ASME 2014 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2014|
|Period||8/09/14 → 10/09/14|