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- W2999204583 abstract "Abstract A new composite structure was formed by filling Nomex honeycomb with polyester fibre to achieve the goal of improving its acoustic characteristics. By using the impedance tube method, the sound absorption coefficient (SAC) of porous materials was determined. Moreover, the effects of different specifications of honeycomb, porosities of fibre, and amount of filler on SAC were studied to achieve the experimental objective. The experimental results demonstrate that the increase of porosity of filler can improve the SAC of the test sample. Honeycombs with different specifications slightly influence the SAC of the sample and the influencing factor may be additional absorption of sound waves caused by contact between materials. Different filling amounts can change the SAC of the sample, while SAC does not improve significantly in the high-frequency range. Simulation results using Virtual Lab. show that porosity of the materials affects the sound absorption performance thereof. The data and conclusions obtained in experiments and simulation provide support for the application of honeycomb sandwich panels in acoustics and noise reduction." @default.
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- W2999204583 date "2020-05-01" @default.
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- W2999204583 title "Sound absorption performance of a filled honeycomb composite structure" @default.
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- W2999204583 doi "https://doi.org/10.1016/j.apacoust.2019.107202" @default.
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