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- W4316135890 abstract "Foam glass-ceramics have the characteristics of broadband sound absorption, lightweight and high-strength, which can be utilized in sound barriers on traffic networks. Due to the complexity of microstructure, there is no sound absorption model suitable for foam glass-ceramics at present. In order to realize the prediction of sound absorption performance, a sound absorption model based on Johnson-Allard model was studied in this paper. The results show that the sound absorption coefficient of foam glass-ceramics only can be accurately predicted by Johnson-Allard model in a relatively low frequency band (500∼1250 Hz). Therefore, to broaden the applicability of the model to acoustic frequencies, three sub-structure factors were introduced to modify Johnson-Allard model with the influence of microstructure on the sound absorption performance fully considered. The results show that the modified Johnson-Allard model has high accuracy in predicting the sound absorption coefficient of foam glass-ceramics in the full frequency band of traffic network noise." @default.
- W4316135890 created "2023-01-14" @default.
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- W4316135890 date "2023-03-01" @default.
- W4316135890 modified "2023-10-01" @default.
- W4316135890 title "Sound absorption model of foam glass-ceramics based on microstructure" @default.
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- W4316135890 doi "https://doi.org/10.1016/j.jnoncrysol.2023.122136" @default.
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