THE CHARACTERISTICS OF ACOUSTIC EMISSION ON VARIOUS TYPES OF FAILURE IN GFRP

The patterns of the amplitude distributions of the acoustic emission for various kinds of GFRP are determined to imitate some fundamental failure moles such as matrix crazing,fibex-matrix interface failure,delamination and fiber breakage.Two kinds of laminates are made of glass-weave/resin and glass-fiber/resin prepregtapes.Various kinds of stacking sequences,including 0°,±45°,0°/90°,are selected.The amplitude distributions of the acoustic emission are monitored at various loading stage.The amplitude distributions of the resin specimens with different glass fiber bunches are also investigated.