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Carbon Fiber Aluminum Honeycomb Sandwich Composite Structures’ Sound Insulation Properties Carbon fiber aluminum honeycomb sandwich composite structures are increasingly utilized in aviation and high-speed trains, where their sound insulation properties significantly affect interior noise levels. Research has found that in the frequency range below 1000Hz, the sound insulation of the “carbon fiber composite panel + aluminum honeycomb core + carbon fiber composite panel” structure is inferior to that of the “aluminum alloy panel + aluminum honeycomb core + aluminum alloy panel” structure of the same size. Similarly, within 100~3150Hz, its weighted sound insulation is also lower than the aluminum alloy counterpart. However, data suggests that increasing the thickness of the […]