EVALUATION OF THE INTERFACIAL PROPERTIES IN THE EMBEDDED-SINGLE-FIBERCOUPON TEST

The embedded-single-fibre tension test is a very useful technique for the evaluation of interfacial properties in composite materials. There are, however, some problems with this method. A comparison is made be tween the normal embedded-single-fibre method characterized by critica l fibre length and the interfacial transmissibility method proposed by the authors. The effects of resin properties, in particular, are disc ussed. As the results show, there is some difficulty in evaluating the interfacial properties by the normal embedded-single-fibre method in the case of brittle-matrix systems, whereas interfacial transmissibili ty provides the possibility of evaluating interfacial properties over a wide range of resin properties.