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Abstract A new approach to the design of sound-absorbing materials was experimentally investigated. Improved acoustic properties were obtained in a wider frequency range through the impregnation of nanoporous grit into… Click to show full abstract
Abstract A new approach to the design of sound-absorbing materials was experimentally investigated. Improved acoustic properties were obtained in a wider frequency range through the impregnation of nanoporous grit into foam pores. Using this approach, the range of efficiency of these materials was extended from high frequencies of 2.0–6.3 kHz to a lower band of 0.5–1.6 kHz. The absorption ratio was increased by 60–100%, and the transmission loss was increased by 20–22 dB.
Keywords:
sound absorbing;
hybrid sound;
grit;
foam materials;
materials nanostructured;
absorbing foam
Journal Title: Applied Acoustics
Year Published: 2018
Link to full text (if available)
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Journal Title: Applied Acoustics
Year Published: 2018
Link to full text (if available)
Share on Social Media: Sign Up to like & get
recommendations!