Abstract
Effects of the fiber/matrix interfacial properties on the tensile strength of unidirectional Tyranno ZMI fiber reinforced epoxy matrix composites are investigated experimentally. The interfacial properties are evaluated by using the fragmentation test and the single fiber tension test. Tensile tests on the unidirectional composites are also performed to clarify the relation between the interfacial properties and the composite strength. Both fibers with and without sizing treatment are used to discuss the effect of difference in the interfacial properties. Preliminary results of the Monte Carlo simulation prediction of the composite strength are shown for further discussion of the effect of the interfacial properties on the composite strength.
