Sandwich composite constructions that possess several multi-functional benefits in addition to providing structural strength and stiffness have been investigated in the current work. In comparison to traditional foam and honeycomb cores, the Z-pin reinforced space core provides multi-functionality to route wires and rods, embed electronic assemblies, store fuel and fire-retardant foam and provide tailored damping in structures among other conceivable benefits. The present study deals with vibration characterization of Z-pin sandwich plates with hollow and foam-filled core. A finite element study has been conducted on hollow Z-pin core sandwich panels to investigate the stiffness reduction associated with Z-pin buckling.

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