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Dasyam, A., Khaleel, O., & Sharma, B. (2020, October). Acoustic absorption properties of granular silica aerogels. In INTER-NOISE and NOISE-CON Congress and Conference Proceedings (Vol. 261, No. 6, pp. 48-58). Institute of Noise Control Engineering.
Dasyam, Amrutha, Ola Khaleel, and Bhisham Sharma. "Acoustic absorption properties of granular silica aerogels." INTER-NOISE and NOISE-CON Congress and Conference Proceedings. Vol. 261. No. 6. Institute of Noise Control Engineering, 2020.
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A Dasyam, O Khaleel, B Sharma - INTER-NOISE and NOISE …, 2020 - ingentaconnect.com

Acoustic absorption properties of granular silica aerogels.

EPSCoR Research Infrastructure Improvement Program AND Program Evaluation

Sharma

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Excerpt

Aerogels are a class of synthetic materials derived using supercritical drying to extract the liquid component of a gel and replacing it with a gas. This process results in the formation of an ultra-lightweight nanoporous solid composed of up to 99.98% air by volume. Here, we characterize the absorption properties of commercially available aerogel granules using a two-microphone impedance tube. Four different aerogels with granule diameters ranging from 2-to 4000 μm and granule densities ranging 120 to 180 kg/m3 are tested. The results …

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