Property Analysis for Microwave Absorbing Material Based on Effective Medium Model

2015 ◽  
Vol 713-715 ◽  
pp. 2811-2814
Author(s):  
Heng Liu ◽  
Zhao Yang Zeng ◽  
Chao Wu ◽  
Xu Liang Lv ◽  
Qi Jia
Keyword(s):  
Experimental Data ◽  
Volume Ratio ◽  
Media Theory ◽  
Electromagnetic Parameters ◽  
Property Analysis ◽  
Effective Medium Model ◽  
Effective Media ◽  
Effective Media Theory ◽  
Absorbing Material ◽  
Comparison With Experimental Data

In order to predict the absorbing properties of absorbing material effectively in theory, effective media theory was applied to reduce the effective electromagnetic parameters of several composite absorbing agents under different volume ratio. The comparison with experimental data shows that this method can well forecast the absorbing properties of absorbing material. For practical absorbing agent and penetrating agent, this method can compute the optimal proportioning and material thickness.

scholarly journals Effective media theory with spatial correlation for flow in a fracture

1997 ◽  
Vol 102 (B10) ◽  
pp. 22587-22594 ◽  
Author(s):  
Joseph B. Walsh ◽  
Stephen R. Brown ◽  
William B. Durham
Keyword(s):  
Spatial Correlation ◽  
Media Theory ◽  
Effective Media ◽  
Effective Media Theory

Permeability calculation in composite media with low filler concentration: A new method of effective media theory application

2009 ◽  
Vol 105 (7) ◽  
pp. 07A526 ◽  
Author(s):  
J. T. Jiang ◽  
L. Zhen ◽  
X. J. Wei ◽  
Y. X. Gong ◽  
W. Z. Shao ◽  
...  
Keyword(s):  
Media Theory ◽  
New Method ◽  
Filler Concentration ◽  
Composite Media ◽  
Effective Media ◽  
Effective Media Theory ◽  
Theory Application

Analysis of Thermal Conductivity of Lime Plaster with Pozzolanic Addition by Different Homogenization Techniques

2014 ◽  
Vol 982 ◽  
pp. 1-5
Author(s):  
Jan Fořt ◽  
Lukáš Fiala ◽  
Milena Pavlíková ◽  
Zbyšek Pavlík ◽  
Robert Černý
Keyword(s):  
Thermal Conductivity ◽  
Pulse Method ◽  
Measured Data ◽  
Media Theory ◽  
Practical Applications ◽  
Effective Media ◽  
Effective Media Theory ◽  
Lime Plaster ◽  
Water Saturated

Thermal conductivity of lime-pozzolan plaster is analyzed in the paper. At first, determination of basic physical properties of tested material is done for its basic characterization, as well as for the assessment of input parameters in the subsequent analysis of measured data by different homogenization techniques. The measurements of thermal conductivity are performed in dependence on moisture content from the dry state to the fully water saturated state using transient pulse method. Among the homogenization techniques based on effective media theory, Lichtenecker’s and Dobson’s models are used. The measured data presented in this paper can find utilization in practical applications of the studied plaster. The analyzed homogenization techniques are found to be applicable for a rapid evaluation of moisture dependent thermal conductivity.

High Permeability of Z-Type Ferrite Sheets Directional Array

2017 ◽  
Vol 898 ◽  
pp. 1645-1648
Author(s):  
Shi Bing Pan ◽  
Cheng Jun Zhang ◽  
Hai Kun Wu ◽  
Lei Qian ◽  
Ming Xun Yu ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Magnetic Permeability ◽  
Chemical Precipitation ◽  
Media Theory ◽  
Precipitation Method ◽  
Intrinsic Permeability ◽  
High Permeability ◽  
Effective Media ◽  
Specific Direction ◽  
Effective Media Theory

Z-type ferrite sheets were prepared by chemical precipitation method to investigate influences of directional arrays from the Z-type ferrite sheets on magnetic properties. The permeability of the ferrite directional arrays was obviously improved in the specific direction. Assuming that the intrinsic permeability of Z-type ferrite was existed, the magnetic permeability in array was calculated by the Maxwell-Garnett equation of effective media theory. The reason for the large difference between the theoretical calculation and measured value was also discussed.

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