ON INTERFACIAL FRACTURE TOUGHNESS MEASUREMENTS OF A SINGLE GLASS FIBER

The interfacial relationship between a glass fiber bundle and epoxy resin is investigated. A cylindrical notched specimen with a single bundle of fibers along the axis is created to observe debonding behavior. It is subsequently subjected to a quasi-static tensile test. The purpose of the test is to examine the interfacial debonding between fiber and resin from the point of breakage. All specimens reached a critical stress value and exhibited debonding to some degree. Experimental composite material properties are calculated and compared to technical data.