Abstract
Some transverse mechanical properties of composites comprising uniaxially aligned continuous glass fibres embedded in a glass microsphere-reinforced expoxy resin matrix have been determined from three-point bending experiments. For a constant fibre volume fraction, the transverse modulus, strength, fracture surface energy for crack initiation and work of fracture are investigated as a function of microsphere content and compared with the equivalent two-phase composites without beads. Modification of composite transverse properties are attributed to corresponding changes in matrix properties and comparisons are made with boundary expressions established for two-phase particulate systems. The effects of voids, microsphere size and surface treatment on the properties are also examined.
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