Sound Absorption Properties of Sintered Fibrous Metals under High Temperature Conditions

您当前的位置：

首页 >

文章列表页 >

Sound Absorption Properties of Sintered Fibrous Metals under High Temperature Conditions

更新时间：2025-07-09

- Sound Absorption Properties of Sintered Fibrous Metals under High Temperature Conditions
- Vol. 42, Issue 11, Pages: 1327-1331(2008)
- 作者机构：
  
  西安交通大学机械工程学院,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： TB31;TB535
- Online First：10 November 2008，
  
  Published：2008
- 稿件说明：
移动端阅览
Sound Absorption Properties of Sintered Fibrous Metals under High Temperature Conditions[J]. 2008, 42(11): 1327-1331.
DOI：

Sound Absorption Properties of Sintered Fibrous Metals under High Temperature Conditions[J]. 2008, 42(11): 1327-1331. DOI：

摘要

以烧结金属纤维多孔材料为研究对象

对其在不同温度(20～500 ℃)和温度梯度(-2.4 ℃/mm

+4.05 ℃/mm)作用下的吸声性能进行了理论计算和分析.应用双传声器传递函数法原理

设计并搭建了多孔金属材料高温吸声性能实验的测试装置

对材料在不同温度点下的吸声性能进行了实验测试

初步验证了理论计算的正确性.研究表明

采用参考温度法能够较好地计算温度较低时的材料吸声性能

温度的变化对多孔金属材料表面声阻抗率具有显著影响.当存在温度梯度场作用时

应重视温度梯度对多孔金属材料总体吸声性能的影响

在一定条件下

负温度梯度可以提高材料的吸声性能

而正温度梯度可使材料吸声性能趋于降低.

Abstract

Focusing the attention on a sintered fibrous metal sample

the sound absorption properties under different temperatures(from 20 ℃ to 500 ℃)and temperature gradients(-2.4 ℃/mm and 4.05 ℃/mm)are theoretically evaluated. By adopting the two-microphone transfer-function method

a set for measuring the uniform high-temperature sound absorption properties of porous metal is developed

and the sound absorption properties of a sintered fibrous metal sample at different temperatures are measured to validate the theoretical results. It is found that reference-temperature method can be used to well evaluate the porous metal acoustic properties at relatively low temperatures. And the changes of temperature fields exert remarkable effects on the surface acoustic impedance at normal incidence of material. When the constant temperature gradient exists across the material cross-section

the effects of temperature gradient on overall sound absorption characteristics of porous metal ought to be regarded considerably. Under certain conditions

the minus temperature gradient may enhance the sound absorption of porous metal whereas the positive temperature brings an adverse effect.

关键词

Keywords

references

UMNOVA O, ATTENBOROUGH K, SHIN U C, et al. Deduction of tortuosity and porosity from acoustic reflection and transmission measurements on thick samples of rigid-porous materials [J]. Applied Acoustics, 2005,66(6): 607-624.

XIE Zhenkai, IK(·overE)DA T, OKUDA Y, et al. Characteristics of sound absorption in lotus-type porous magnesium [J]. J Appl Phy, 2004,43(10): 7315-7319.

HAKAMADA M, KUROMURA T, CHEN Youqing, et al. High sound absorption of porous aluminum fabricated by spacer method [J]. Applied Physics Letters, 2006,88: 1-3.

卢天健,DUPÈRE I D J,DOWLING A P.多孔泡沫材料的声吸收特性 [J].西安交通大学学报,2007,41(9):1003-1011.

LU Tianjian, DUPÈRE I D J, DOWLING A P. Absorption of sound in cellular foams [J] Journal of Xi'an Jiaotong University, 2007,41(9): 1003-1011.

王晓林.金属多孔材料吸声板的优化模型 [J].声学学报,2007,32(2):116-121.

WANG Xiaolin. An optimized model for porous metal sound absorbers [J]. Acta Acoustica, 2007,32(2): 116-121.

ALLARD J F. Propagation of sound in porous media [M]. London: Elsevier Applied Science, 1993:49-117.

PERCE A D. Acoustics an introduction to its physical principles and applications [M]. New York: McGraw-Hill Inc, 1981:508-519.

CHUNG J Y, BLASER D A. Transfer function method of measuring in-duct acoustic propertiesI: theory [J]. J Acoust Soc Am, 1980,68(3): 907-913.

王启杰.对流传热传质分析 [M].西安:西安交通大学出版社,1991:600-627.

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Experimental Study on the Maximum Soot Loading Performance of Diesel Particle Filters

Marangoni Condensation Heat Transfer Characteristics on Vertical Surface with Temperature Gradients

Temperature Distribution During Plasma Activated Sintering

Temperature Gradient Effect on Distortion of DC Electrical Field in Polyethylene

Effect of Voltage Reverse Time on Space Charge and Transient Field in Polyethylene

Related Author

HUA Lun

ZHANG Qiushi

LIU Haitao

NAN Zheng

SUN Nannan

DONG Guanglei

刘继平 1

胡申华 2

Related Institution

State Key Laboratory of Engine and Powertrain System, Weichai Power Company Limited

Suzhou Automotive Research Institute, Tsinghua University

State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University

State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University

State Key Lab of Electrical Insulation and Power Equipment, Xi'an Jiaotong University

⁰