Phononic glass: A robust acoustic-absorption material |
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Authors: | Heng Jiang Yuren Wang |
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Institution: | Key Laboratory of Microgravity Science, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, People's Republic of China. |
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Abstract: | In order to achieve strong wide band acoustic absorption under high hydrostatic pressure, an interpenetrating network structure is introduced into the locally resonant phononic crystal to fabricate a type of phononic composite material called "phononic glass." Underwater acoustic absorption coefficient measurements show that the material owns high underwater sound absorption coefficients over 0.9 in 12-30?kHz. Moreover, the quasi-static compressive behavior shows that the phononic glass has a compressive strength over 5?MPa which is crucial for underwater applications. |
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