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A lightweight yet sound-proof honeycomb acoustic metamaterial
Ist Teil von
Applied physics letters, 2015-04, Vol.106 (17)
Ort / Verlag
Melville: American Institute of Physics
Erscheinungsjahr
2015
Link zum Volltext
Quelle
AIP Journals (American Institute of Physics)
Beschreibungen/Notizen
In this letter, a class of honeycomb acoustic metamaterial possessing lightweight and yet sound-proof properties is designed, theoretically proven, and then experimentally verified. It is here reported that the proposed metamaterial having a remarkably small mass per unit area at 1.3 kg/m2 can achieve low frequency (<500 Hz) sound transmission loss (STL) consistently greater than 45 dB. Furthermore, the sandwich panel which incorporates the honeycomb metamaterial as the core material yields a STL that is consistently greater than 50 dB at low frequencies. The proposed metamaterial is promising for constructing structures that are simultaneously strong, lightweight, and sound-proof.