The interfacial shear strength of carbon fibre/epoxy resin model composites cured either at
room temperature or at 80° C has been evaluated by using both the conventional
fragmentation test and Raman spectroscopy. It was found using both techniques that the
composite cured at high temperature showed a significantly higher interfacial shear strength.
This increase in interfacial shear strength can be explained by the existence of a radial
pressure at the interface resulting from thermal expansion coefficient mismatch between the …