Characterization of resistive heating and thermoelectric behavior of discontinuous carbon fiber-epoxy composites

Kim, Myung-Soo; Sung, Dae Han; Kong, Kyungil; Kim, Nari; Kim, Byeong‐Joo; Park, Hyung Wook; Jung, Mooyoung; Lee, Sang-Hwan; Kim, Su Gi

doi:10.1016/j.compositesb.2015.11.037

Cited by 75 publications

(18 citation statements)

References 21 publications

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“…Although the existing literatures concerning electricthermal damage are relatively abundant at present, most of them focus on the thermoelectric behaviors of CFRP composites, including characterization of temperature filed, [6][7][8] measurement of electrical conductivity. 9 The extent of macro-mechanical property variation as a consequence of electric heating has been widely covered, examining properties of impact, 10 flexure, 11 tension, and fatigue.…”

Section: Introductionmentioning

confidence: 99%

Electro-thermal damage of carbon fiber/epoxy composite laminate

Wang

Liang

Liu

2017

Journal of Reinforced Plastics and Composites

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The present work concentrates on the electro-thermal damage mechanism of carbon fiber/epoxy composites subjected to ampere-level Direct Current (DC) currents. A new fully automated electro-thermal tester that enable one to inject currents through the composites and measure the surface temperature in real time has been developed. The DC electrical conductivity and dielectric properties of electrified composites have been investigated, in order to develop a nondestructive testing method for electro-thermal damage. Additionally, Fourier Transform Infrared Spectroscopy (FT-IR), Dynamic Mechanical Analysis (DMA), flexural properties, surface morphology analysis, and Scanning Electron Microscope (SEM) were conducted to exploit in-depth the damage mechanism of electrified composites. Results show that the electrical conductivity is decreased with increasing currents, resulting from the modification of the fiber-to-fiber conduction paths. With higher currents the dielectric properties are apparently enhanced, and this case can be explained by interfacial polarization that arises from the microcracking induced by the residual thermal stress. The dielectric loss tangent can be regard as a characteristic parameter of electro-thermal damage. Furthermore, the deterioration of flexural performances is attributed to the microcracking, which is proved to be the major damage mechanism. Highintensity currents application has an effect of post-curing and physical aging, which significantly increases the glass transition temperature and suppresses the further formation of micro damage.

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Section: Introductionmentioning

confidence: 99%

Electro-thermal damage of carbon fiber/epoxy composite laminate

Wang

Liang

Liu

2017

Journal of Reinforced Plastics and Composites

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“…For the same polymerization conditions, the PPy/PET sample had a significantly lower average resistance of

indicating that the PPy was able to bind with the polyester more readily. This could be attributed to the differences in the surface structures of the textiles, with the PET samples being woven, more rigid and flat whereas nylon–Lycra samples knitted, flexible with tendency to drape and curl [ 22 , 24 ].…”

Section: Resultsmentioning

confidence: 99%

Electrothermal Modeling and Analysis of Polypyrrole-Coated Wearable E-Textiles

et al. 2021

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The inhomogeneity of the resistance of conducting polypyrrole-coated nylon–Lycra and polyester (PET) fabrics and its effects on surface temperature were investigated through a systematic experimental and numerical work including the optimization of coating conditions to determine the lowest resistivity conductive fabrics and establish a correlation between the fabrication conditions and the efficiency and uniformity of Joule heating in conductive textiles. For this purpose, the effects of plasma pre-treatment and molar concentration analysis of the dopant anthraquinone sulfonic acid (AQSA), oxidant ferric chloride, and monomer pyrrole was carried out to establish the conditions to determine the sample with the lowest electrical resistance for generating heat and model the experiments using the finite element modeling (FEM). Both PET and nylon-Lycra underwent atmospheric plasma treatment to functionalize the fabric surface to improve the binding of the polymer and obtain coatings with reduced resistance. Both fabrics were compared in terms of average electrical resistance for both plasma treated and untreated samples. The plasma treatment induced deep black coatings with lower resistance. Then, heat-generating experiments were conducted on the polypyrrole (PPy) coated fabrics with the lowest resistance using a variable power supply to study the distribution and maximum value of the temperature. The joule heating model was developed to predict the heating of the conductive fabrics via finite element analysis. The model was based on the measured electrical resistance at different zones of the coated fabrics. It was shown that, when the fabric was backed with neoprene insulation, it would heat up quicker and more evenly. The average electrical resistance of the PPy-PET sample used was 190 Ω, and a maximum temperature reading of 43 °C was recorded. The model results exhibited good agreement with thermal camera data.

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“…The heating/cooling rate of MCF as a function of the processing parameters is presented in Figure 9e. The heating/cooling rate had a linear relationship with the process parameters [32]. The heating rate of MCF-H300, H-4, and pH-8.5 were the highest.…”

Section: Influence Of Ph Of the Plating Bathmentioning

confidence: 92%

Effect of Processing Parameters on the Thermal and Electrical Properties of Electroless Nickel-Phosphorus Plated Carbon Fiber Heating Elements

Choi

Park

Seo

2020

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Carbon fibers (CFs) were plated with nickel-phosphorus (Ni-P) using an electroless plating process. The effects of the process parameters such as heat treatment temperature, heat treatment time, and the pH of the plating bath on electroless Ni-P plating were investigated. The structure, elemental composition, and thermal and electrical properties of Ni-P plated CFs (MCF) were characterized by X-ray diffraction (XRD), a four-probe volume resistivity tester, and an infrared thermal imaging camera, respectively. The XRD indicated the presence of amorphous and crystalline phases of Ni and Ni-P. The MCF were able to perform at high temperatures because of their higher thermal conductivity. A heat treatment temperature of 300 °C, a heat treatment time of 4 h, and a pH of 8.5 were found to be optimum for obtaining MCF with desirable thermal and electrical properties.

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Characterization of resistive heating and thermoelectric behavior of discontinuous carbon fiber-epoxy composites

Cited by 75 publications

References 21 publications

Electro-thermal damage of carbon fiber/epoxy composite laminate

Electro-thermal damage of carbon fiber/epoxy composite laminate

Electrothermal Modeling and Analysis of Polypyrrole-Coated Wearable E-Textiles

Effect of Processing Parameters on the Thermal and Electrical Properties of Electroless Nickel-Phosphorus Plated Carbon Fiber Heating Elements

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