The effect of an initial compressive load on the impact-induced damage of Carbon Fiber Reinforced Plastic (CFRP) laminated composites was experimentally studied. Four kinds of test specimens having laminate configurations of (0610/06) were employed, wherein their ply angles (denoted as “θ”) are 30°, 45°, 60°, and 90°. The test specimens were statically loaded, and under the load, they were impacted with an air-gun type of impact apparatus. First, the impact-damaged specimens were inspected by a mechanical scanning acoustic reflection microscope (SAM). The SAM images revealed that the initially applied load gave an increase of delaminated area. Second, for obtaining detailed information on micro-fracture mechanism, vertically cross-sectioned specimens were inspected by a scanning electron microscope (SEM). The highly resolved SEM image showed that the initial load had statically suppressed the generation of the transverse cracks.

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