Sound absorption properties of ceramic hollow sphere structures with micro-sized open cell

被引：25
|
作者：
Wu, Gaohui [1 ]
Li, Ruifeng [1 ]
Yuan, Yu [1 ]
Jiang, Longtao [1 ]
Sun, Dongli [1 ]
机构：
[1] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China
来源：
MATERIALS LETTERS | 2014年 / 134卷
关键词：
Porous materials; Hollow sphere structures; Microstructure; Sound absorption properties; Acoustical model;
D O I：
10.1016/j.matlet.2014.07.082
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Porous structure with micro-sized open cell was tailored for the sound absorption, and ceramic hollow sphere structures (CUSS) were prepared by low temperature pre-bonding and curing process. Micro-sized open cells of CHSS, which demonstrated normal/bimodal distribution, were mainly observed in the interstitial gaps of fly ashes. The CHSS with micro-sized open cells demonstrated a broadband sound absorption above 500 Hz, and its acoustics behavior was affected significantly by the porous structure. The calculated values of sound absorption based on the Pride-Allard model demonstrated similar trends as experimental results with the increase of frequency. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：268 / 271
页数：4
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