Bimodal hybrid lightweight sound-absorbing material with high stiffness

被引：8

作者：

Ruan, Ju-Qi ^{[1
,2
]}

Mosanenzadeh, Shahrzad Ghaffari ^{[3
]}

Li, Xin ^{[1
,2
]}

Yu, Si-Yuan ^{[1
,2
]}

Ma, Chu ^{[3
]}

Lin, Xin ^{[4
]}

Zhang, Shan-Tao ^{[1
,2
]}

Lu, Ming-Hui ^{[1
,2
]}

Fang, Nicholas X. ^{[3
]}

Chen, Yan-Feng ^{[1
,2
]}

机构：

[1] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China

[2] Nanjing Univ, Dept Mat Sci & Engn, Nanjing 210093, Jiangsu, Peoples R China

[3] MIT, Dept Mech Engn, Cambridge, MA 02139 USA

[4] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Shanxi, Peoples R China

来源：

APPLIED PHYSICS EXPRESS | 2019年 / 12卷 / 03期

基金：

加拿大自然科学与工程研究理事会; 中国国家自然科学基金;

关键词：

SURFACE-AREA; ULTRALIGHT; ABSORPTION; BEHAVIOR; AEROGELS;

D O I：

10.7567/1882-0786/ab009e

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

An iron foam/silica aerogel composite (IFSA) with bimodal structure was designed and fabricated to solve the contradictions between acoustic damping and mechanical strength of a material. IFSA exhibits excellent broadband sound absorption performance with average absorption of similar to 57% (500-6400 Hz) and maximum absorption coefficient of 0.995 at 4336 Hz, and high specific stiffness (1.6 x 10(5) m(2) s(-2)). The dissipation mechanism of sound energy in IFSA is well predicted by a designed bimodal model. Such fascinating artificial composite not only provides new insights for developing structural materials with high noise reduction and strength, but also has great potential applications for various fields. (C) 2019 The Japan Society of Applied Physics

引用

页数：5

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