Permittivity and Electric Conductivity Measurement and Microwave Heating Behavior of Mo/Cordierite Composite Materials

2018 ◽  
Author(s):  
Noboru Yoshikawa ◽  
Naoki Inoue ◽  
Takane Watanabe ◽  
Sergey Komarov
Keyword(s):  
Composite Materials ◽  
Electric Conductivity ◽  
Microwave Heating ◽  
Conductivity Measurement ◽  
Heating Behavior

scholarly journals Efficiency of the Needle Probe Test for Evaluation of Thermal Conductivity of Composite Materials: Two-Scale Analysis

2014 ◽  
Vol 36 (1) ◽  
pp. 55-62 ◽  
Author(s):  
Dariusz Łydżba ◽  
Adrian Różański ◽  
Magdalena Rajczakowska ◽  
Damian Stefaniuk
Keyword(s):  
Thermal Conductivity ◽  
Composite Materials ◽  
Numerical Simulations ◽  
Conductivity Measurement ◽  
Scale Analysis ◽  
Equivalent Conductivity ◽  
Inclusion Type ◽  
Two Phase ◽  
Needle Probe ◽  
Probe Test

Abstract The needle probe test, as a thermal conductivity measurement method, has become very popular in recent years. In the present study, the efficiency of this methodology, for the case of composite materials, is investigated based on the numerical simulations. The material under study is a two-phase composite with periodic microstructure of “matrix-inclusion” type. Two-scale analysis, incorporating micromechanics approach, is performed. First, the effective thermal conductivity of the composite considered is found by the solution of the appropriate boundary value problem stated for the single unit cell. Next, numerical simulations of the needle probe test are carried out. In this case, two different locations of the measuring sensor are considered. It is shown that the “equivalent” conductivity, derived from the probe test, is strongly affected by the location of the sensor. Moreover, comparing the results obtained for different scales, one can notice that the “equivalent” conductivity cannot be interpreted as the effective one for the composites considered. Hence, a crude approximation of the effective property is proposed based on the volume fractions of constituents and the equivalent conductivities derived from different sensor locations.

scholarly journals Electric Conductivity Measurement of Polyperinaphthalene Thin Films Prepared by Laser Ablation of PTCDA/Co Mixture Target.

2001 ◽  
Vol 14 (2) ◽  
pp. 195-196 ◽  
Author(s):  
Satoru Nishio ◽  
Kazuyuki Tamura ◽  
Masayoshi Nakano ◽  
Akiyoshi Matsuzaki ◽  
Hiroyasu Sato
Keyword(s):  
Thin Films ◽  
Laser Ablation ◽  
Electric Conductivity ◽  
Conductivity Measurement

Dielectric Characterizations and Microwave Heating Behavior of Zinc Compound in Microwave Field

2017 ◽  
Vol 43 (5) ◽  
pp. 2329-2338 ◽  
Author(s):  
Guo Lin ◽  
Tu Hu ◽  
Chenhui Liu ◽  
Libo Zhang ◽  
Jinhui Peng ◽  
...  
Keyword(s):  
Microwave Heating ◽  
Microwave Field ◽  
Zinc Compound ◽  
Heating Behavior

scholarly journals Numerical modeling of microwave heating

2010 ◽  
Vol 42 (1) ◽  
pp. 99-124 ◽  
Author(s):  
A.K. Shukla ◽  
A. Mondal ◽  
A. Upadhyaya
Keyword(s):  
Thermal Conductivity ◽  
Numerical Modeling ◽  
Temperature Distribution ◽  
Microwave Heating ◽  
Two Dimensional ◽  
Conventional Furnace ◽  
Microwave Furnace ◽  
Simulation Results ◽  
Heating Behavior ◽  
Cylindrical Samples

The present study compares the temperature distribution within cylindrical samples heated in microwave furnace with those achieved in radiatively-heated (conventional) furnace. Using a two-dimensional finite difference approach the thermal profiles were simulated for cylinders of varying radii (0.65, 6.5, and 65 cm) and physical properties. The influence of susceptor-assisted microwave heating was also modeled for the same. The simulation results reveal differences in the heating behavior of samples in microwaves. The efficacy of microwave heating depends on the sample size and its thermal conductivity.

scholarly journals Microwave-induced heating behavior of Y-TZP ceramics under multiphysics system

2020 ◽  
Vol 9 (1) ◽  
pp. 119-130
Author(s):  
Kaihui Cui ◽  
Tianqi Liao ◽  
Chen Qiu ◽  
Hua Chen ◽  
Junwen Zhou
Keyword(s):  
Numerical Model ◽  
Microwave Heating ◽  
Three Dimensional ◽  
Heating System ◽  
Dielectric Materials ◽  
Microwave Cavity ◽  
Heating Process ◽  
Highly Sensitive ◽  
Dimensional Distribution ◽  
Heating Behavior

AbstractThis paper aims to investigate the heating behaviors of Y-TZP arrays under microwave irradiation. In this study, a three-dimensional numerical model of the microwave heating system was developed by COMSOL Multiphysics software. The numerical model was verified by microwave heating experiment, and the average root means square errors (RMSE) between the simulation and experimental data also confirmed the reliability of the model. The varying position and arrays of materials were applied to predict and visualize the three-dimensional distribution of the electromagnetic field and temperature during the microwave heating process. The results show that the temperature field distribution in microwave cavity was highly sensitive to the dielectric materials, the arrangement of the Y-TZP array interfered with the distribution of standing waves. The results can serve as references for the study to design and optimize the ceramic’s application in terms of microwave heating.

scholarly journals Impact of Oil Composition on Microwave Heating Behavior of Heavy Oils

2018 ◽  
Vol 32 (2) ◽  
pp. 1592-1599 ◽  
Author(s):  
Yang Zhang ◽  
Mohamed Adam ◽  
Abarasi Hart ◽  
Joseph Wood ◽  
Sean P. Rigby ◽  
...  
Keyword(s):  
Microwave Heating ◽  
Heavy Oils ◽  
Oil Composition ◽  
Heating Behavior

scholarly journals Curie-temperature dependence of microwave heating behavior of NixZn(1−x)Fe2O4 powders

AIP Advances ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 045320
Author(s):  
K. Kashimura ◽  
T. Namioka ◽  
T. Miyata ◽  
T. Fujii ◽  
H. Itoh ◽  
...  
Keyword(s):  
Curie Temperature ◽  
Temperature Dependence ◽  
Microwave Heating ◽  
Heating Behavior

In Situ Ionic/Electric Conductivity Measurement of La[sub 0.55]Li[sub 0.35]TiO[sub 3] Ceramic at Different Li Insertion Levels

2004 ◽  
Vol 151 (8) ◽  
pp. A1196 ◽  
Author(s):  
Chunsheng Wang ◽  
Prashanth Patil ◽  
A. John Appleby ◽  
Frank. E. Little ◽  
Mehmet Kesmez ◽  
...  
Keyword(s):  
Electric Conductivity ◽  
Conductivity Measurement
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