scholarly journals Heat Transfer in Enclosure of Composite Material with Fibers Arranged in Various Geometrical Arrays

2015 ◽  
Vol 125 (8) ◽  
pp. 16-24
Author(s):  
Amina H.
Keyword(s):  
Heat Transfer ◽  
Composite Material

Coupled heat transfer in a composite material

1992 ◽  
Vol 32 (4) ◽  
pp. 600-607 ◽  
Author(s):  
A. M. Grishin ◽  
A. N. Golovanov ◽  
A. S. Yakimov
Keyword(s):  
Heat Transfer ◽  
Composite Material ◽  
Coupled Heat Transfer

scholarly journals INVESTIGATION ON CORROSION PROPERTIES OF CARBON-CARBON COMPOSITES

2020 ◽  
pp. 154-160
Author(s):  
Yu.A. Gribanov ◽  
I.V. Gurin ◽  
V.V. Gujda ◽  
A.N. Bukolov ◽  
V.V. Kolosenko
Keyword(s):  
Heat Transfer ◽  
Composite Material ◽  
Corrosion Resistance ◽  
Carbon Composite ◽  
Carbon Composites ◽  
Content Increase ◽  
Corrosion Properties ◽  
Corrosive Media ◽  
The Matrix ◽  
Accident Conditions

The corrosion resistance of carbon-carbon composite materials (C–C composites) was studied in a corrosive media of coolant NaF+ZrF4 salt (a model heat-transfer) at 700 °С in the air flow. It has been shown that C–C composite material is resistant to the model heat-transfer even under conditions of critical temperature accident. The main mechanism that leads to the C–C composite corrosion is a mechanism of composite material oxidation due to the contact with the air. The study has evidenced that the C–C composite burn-up rate well correlates with the pyrocarbon matrix content in the composite, the matrix content increase by 2530% results in the composite corrosion resistance increase by a factor of 2–4. So, by developing corrosion-resistant carbon-carbon composites one has a problem of finding an optimum fiber-matrix ratio in the composite. It has been confirmed experimentally that by silication of C–C composites with the use of the methods which were developed in NSC KIPT it is possible to increase the service life of products under simulated accident conditions by a factor of 7–7.5.

Morphological Approach for Nonlinear Flow and Heat Transfer in Complex Bio-Composite Material

2018 ◽  
Vol 40 (17-18) ◽  
pp. 1486-1497
Author(s):  
Rafael Chaves Deptulski ◽  
Faiza Mnasri ◽  
Mohamed El Ganaoui ◽  
Rachid Bennacer
Keyword(s):  
Heat Transfer ◽  
Composite Material ◽  
Nonlinear Flow ◽  
Flow And Heat Transfer ◽  
Morphological Approach

Measurements on the Thermal Conductivity of Epoxy/Carbon-Nanotube Composite

2008 ◽  
Author(s):  
Cheng-Hsiung Kuo ◽  
Hwei-Ming Huang
Keyword(s):  
Heat Transfer ◽  
Thermal Conductivity ◽  
Composite Material ◽  
Carbon Nanotube ◽  
Epoxy Resins ◽  
Epoxy Composite ◽  
Heat Generation Rate ◽  
Transfer Rates ◽  
Pure Epoxy ◽  
Carbon Nanotube Composite

This study measures the thermal conductivity of the MWNT/epoxy bulk composite material to enhance the heat transfer rates of the high power LED device. In this study, three different weight percentages (0.0 wt%, 0.3 wt% and 0.5 wt%) of MWNT/Epoxy composite and five different heat generating rates were employed for the investigation. The case of pure epoxy resins (0.0 wt%) was used as a reference. The responding time and the thermal conductivity of the composites were evaluated. The results show that the response is the fastest for composite with 0.5 wt% MWNT among three composites studied herein. The responses of the 0.3%wt and 0.5%wt composite are increased by 14.3%∼26.7% relative to that of the pure epoxy. Compare with that of the pure epoxy, the thermal conductivities for the cases with 0.3 wt% and 0.5 wt% MWNT/epoxy composite are increased by 15.9%∼44.9%. Further, the thermal conductivity does not vary with temperature for the temperature range studied herein. In the present study, the thermal conductivity of the composite material is found to increase mildly with the increasing heat generation rate.

Effective heat conductivity of Honeycomb (porous) composite panel

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Cletus Matthew Magoda ◽  
Jasson Gryzagoridis ◽  
Kant Kanyarusoke
Keyword(s):  
Heat Transfer ◽  
Thermal Conductivity ◽  
Composite Material ◽  
Thermal Properties ◽  
Heat Conductivity ◽  
Composite Panel ◽  
Porous Composite ◽  
Content Type ◽  
One Dimensional ◽  
Coefficient Of Thermal Conductivity

Purpose The purpose of this paper is to validate an assumption of what to use as an effective (steady state) heat transfer coefficient of thermal conductivity for the honeycomb core sandwiched by Fiberglass face sheets composite. A one-dimensional model based on Fourier law is developed. The results are validated experimentally. Design/methodology/approach The results were obtained from the one-dimensional mathematical model of an overall or effective heat conductivity of the Honeycomb composite panel. These results were validated experimentally by applying heat flux on the specimen under controlled environment. The surface temperatures at different voltages were recorded and analysed. The skin of the sandwich composite material used in the investigation was Fiberglass sheet with a thickness of 0.5 mm at the bottom and 1.0 mm at the top surface. Both skins have a stacking sequence of zero degrees. Due to the presence of air cells in the core (Honeycomb), the model considers the conduction, convection and radiation heat transfer, across the thickness of the panel, combined as an effective conduction mode, whose value may be predicted by using the coefficient of thermal conductivity of the air based on the average temperature difference between the two skins. The experimental results for the heat transfer through the thickness of the panel provide validation of this assumption/prediction. Both infrared thermography and conventional temperature measurement techniques (thermocouples) were used to collect the data. Findings The heat transfer experiment and mathematical modeling were conducted. The data obtained were analyzed, and it was found that the effective thermal conductivity was temperature-dependent as expected. The effective thermal conductivity of the honeycomb panel was close to that of air, and its value could be predicted if the panel surface temperatures were known. It was also found that as temperature raised the variation between experimental and predicted effective air conduction raised up. This is because there was an increase in molecular diffusion and vibration. Therefore, the convection heat transfer increased at high temperatures and the air became an insulator. Originality/value Honeycomb composite panels have excellent physical and thermal properties that influence their performance. This study provides an appropriate method in determining thermal conductivity, which is one of the critical thermal properties of porous composite material. This paper also gives useful and practical data to industries that use or manufacture honeycomb composite panels.

Heat Transfer Enhancement of Paraffin Phase Change Composite Material Using Recycled Aluminum Sawing Chips

JOM ◽  
2019 ◽  
Vol 71 (3) ◽  
pp. 1049-1055 ◽  
Author(s):  
György Thalmaier ◽  
Niculina Argentina Sechel ◽  
Ioan Vida-Simiti
Keyword(s):  
Heat Transfer ◽  
Composite Material ◽  
Phase Change ◽  
Heat Transfer Enhancement ◽  
Transfer Enhancement

Conjugate Heat Transfer with Composite Material Solution by Integral Transformation

2016 ◽  
Author(s):  
Daniel Chalhub ◽  
Apoena Lanatte de Oliveira Calil ◽  
Rodrigo Souza de Moura Rodrigo ◽  
Lucas Coelho
Keyword(s):  
Heat Transfer ◽  
Composite Material ◽  
Conjugate Heat Transfer ◽  
Integral Transformation ◽  
Material Solution
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