A Wide Band Strong Acoustic Absorption in a Locally Network Anechoic Coating
JIANG Heng1,2, ZHANG Mi-Lin1, WANG Yu-Ren2, HU Yan-Ping2, LAN Ding2, WEI Bing-Chen2
1Key Laboratory of Superlight Materials and Surface Technology (Ministry of Education), Harbin Engineering University, Harbin 1500012Key Laboratory of Microgravity Science, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190
A Wide Band Strong Acoustic Absorption in a Locally Network Anechoic Coating
JIANG Heng1,2, ZHANG Mi-Lin1, WANG Yu-Ren2, HU Yan-Ping2, LAN Ding2, WEI Bing-Chen2
1Key Laboratory of Superlight Materials and Surface Technology (Ministry of Education), Harbin Engineering University, Harbin 1500012Key Laboratory of Microgravity Science, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190
摘要Composite materials with interpenetrating network structures usually exhibit unexpected merit due to the cooperative interaction. Locally resonant phononic crystals (LRPC) exhibit excellent sound attenuation performance based on a periodical arrangement of sound wave scatters. Inspired by the interpenetrating network structure and the LRPC concept, we develop a locally network anechoic coating (LNAC) that can achieve a wide band of underwater strong acoustic absorption. The experimental results show that the LNAC possesses an excellent underwater acoustic absorbing capacity in a wide frequency range. Moreover, in order to investigate the impact of the interpenetrating network structure, we fabricate a faultage structure sample and the network is disconnected by hard polyurethane (PU). The experimental comparison between the LNAC and the faultage structure sample shows that the interpenetrating network structure of the LNAC plays an important role in achieving a wide band strong acoustic absorption.
Abstract：Composite materials with interpenetrating network structures usually exhibit unexpected merit due to the cooperative interaction. Locally resonant phononic crystals (LRPC) exhibit excellent sound attenuation performance based on a periodical arrangement of sound wave scatters. Inspired by the interpenetrating network structure and the LRPC concept, we develop a locally network anechoic coating (LNAC) that can achieve a wide band of underwater strong acoustic absorption. The experimental results show that the LNAC possesses an excellent underwater acoustic absorbing capacity in a wide frequency range. Moreover, in order to investigate the impact of the interpenetrating network structure, we fabricate a faultage structure sample and the network is disconnected by hard polyurethane (PU). The experimental comparison between the LNAC and the faultage structure sample shows that the interpenetrating network structure of the LNAC plays an important role in achieving a wide band strong acoustic absorption.
JIANG Heng;ZHANG Mi-Lin;WANG Yu-Ren;HU Yan-Ping;LAN Ding;WEIBing-Chen. A Wide Band Strong Acoustic Absorption in a Locally Network Anechoic Coating[J]. 中国物理快报, 2009, 26(10): 106202-106202.
JIANG Heng, ZHANG Mi-Lin, WANG Yu-Ren, HU Yan-Ping, LAN Ding, WEIBing-Chen. A Wide Band Strong Acoustic Absorption in a Locally Network Anechoic Coating. Chin. Phys. Lett., 2009, 26(10): 106202-106202.
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2009, Vol. 26 
