Key Laboratory of Microgravity Science, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.
J Acoust Soc Am. 2012 Aug;132(2):694-9. doi: 10.1121/1.4730922.
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.
为了在高压水环境下实现强宽带吸声，在局域共振声子晶体中引入互穿网络结构，制备了一种称为“声子玻璃”的声子复合材料。水下吸声系数测量表明，该材料在 12-30kHz 频段具有超过 0.9 的高声学吸收系数。此外，准静态压缩行为表明，声子玻璃具有超过 5MPa 的抗压强度，这对于水下应用至关重要。
