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- W4386692154 abstract "Abstract To reveal the sound absorption property and mechanisms of Al 2 O 3 -polyurethane (Al 2 O 3 -PU) composite materials in theory, the impedance tube model is established by using the finite element method in this paper. Meantime, the theoretical modal and the calculation method adopt the Johnson-Champoux-Allard (JCA) modal and the standing wave ratio method, respectively. By comparing the experimental and simulation values of PU and Al 2 O 3 -PU composites from 0 to 1250 Hz, the results prove that the JCA predicted values can match the actual measured values. To further predict the sound property of Al 2 O 3 -PU composites in the medium and high frequency, the diameter of 29 mm and length of 600 mm for the impedance tube is installed. Finally, the sound pressure distribution diagram of the impedance tube is obtained." @default.
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- W4386692154 date "2023-09-01" @default.
- W4386692154 modified "2023-10-18" @default.
- W4386692154 title "Theoretical study of sound absorption performance for Al<sub>2</sub>O<sub>3</sub>-polyurethane foam composite" @default.
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- W4386692154 doi "https://doi.org/10.1088/1742-6596/2587/1/012041" @default.
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