Interaction Between Electromagnetic Field and CFRP Materials: A New Multiscale Homogenization Approach

Wasselynck, Guillaume; Trichet, Didier; Ramdane, Brahim; Fouldagar, J.

doi:10.1109/tmag.2010.2045359

Cited by 45 publications

(16 citation statements)

References 5 publications

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“…This scale factor is too large to simulate the real structure of FRPs. To solve this problem, the homogenization method is typically used and adopted in the present study as well . In this approach, a FRP laminate is divided into extensive microscopic elementary bricks.…”

Section: Modeling Techniquementioning

confidence: 99%

Dielectric properties of continuous fiber reinforced polymer composites: Modeling, validation, and application

Zhou

Cheng

et al. 2017

Polymer Composites

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Microwave curing technologies can realize a fast and energy saving curing process with less temperature gradients in the composite thickness compared with traditional autoclave curing techniques. A fundamental understanding and quantitative characterization for the dielectric properties of composites are crucial steps to ensure an effective microwave curing process. Herein, this study aims at providing a practical method to predict the effective complex permittivity of continuous fiber reinforced composites. A stochastic method was used to simulate the real distribution of fibers in the resin matrix. The huge scale factor between the micro architecture and macro structure of composites was balanced by using homogenization methods. Then the dielectric properties of composites in both longitudinal and transverse directions were computed by finite element analysis. The effectiveness of the proposed model was validated by various experimental measurements. Statistical analysis showed that the relative error was only 1.48-3.17% between model calculations and experimental results. Based on curing kinetics, the proposed model was further applied to investigate the permittivity of composites during microwave cure. POLYM. COMPOS., 00:000-000, of composites during microwave cure. POLYM. COMPOS., 39:4646-4655, 2018. FIG. 1. A two-phase model of carbon fiber/epoxy composites. (a) Model generated cross-sectional image of the composite brick; (b) Gray-scale image identified by COMSOL Multiphysics; (c) Resolved function of permittivity and position; (d) Electric displacement modulus and potential distribution within a FRP composite brick. [Color figure can be viewed at wileyonlinelibrary.com]

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Section: Modeling Techniquementioning

confidence: 99%

Dielectric properties of continuous fiber reinforced polymer composites: Modeling, validation, and application

Zhou

Cheng

et al. 2017

Polymer Composites

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“…Figures 6a and 6b show measured and predicted contour plots for vertical and horizontal polarization, respectively, at 4.53 GHz, which are found in good correlation with each other. The probable reasons for small discrepancies between the measurements and predicted results may be due to spurious signals, CFRP, fabrication related issues [15], and so forth. In Figures 6a and 6b, the fabricated offset reflector antenna meets 26 dB EOC‐gain over India coverage and 26 dB in XPD at EOC of India.…”

Section: Resultsmentioning

confidence: 99%

Investigation of factors contributing depolarization in offset reflector antenna and trimmed-reflector offset parabolic antenna with lower cross-polarization

Gupta

Sood

Jyoti

2012

Int J RF and Microwave Comp Aid Eng

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This article outlines impact of various factors on cross-polarization characteristics of offset reflector antenna for communication spacecraft with smaller sized bus at C band. Effects of different parameters are considered in rigorous analysis of the antenna. Measured and predicted performances are found in agreement. To fulfill specific requirement of higher edge-of-coverage gain (>26 dBi) and higher cross-polarization discrimination (XPD > 30 dB) over a wider coverage and dual linear polarization under the imposed constraints, a novel trimmed-reflector offset parabolic antenna (TROPA) is devised. This interesting configuration is obtained by trimming both sides parallel to symmetrical plane of a parabolic offset reflector antenna. Parametric study of trimming distance versus its impact on cross-polarization is also presented. The TROPA acquires wider bandwidth, simplification in its mechanical design and manufacturing, and offers low weight and compactness. It is also shown that trimmed reflector has almost even RF performance in presence of spacecraft body and other antenna. V C 2012 Wiley Periodicals, Inc. Int J RF and Microwave CAE 00:000-000, 2012.

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“…The electrical conductivities in the x‐ , y‐ and z‐ directions were obtained using the microscopic model and used within a FE method macroscopic model. The authors further developed their work to include a volt‐ampere metric method in [21], which was used to calculate the conductivity along the fibre ( x‐ direction).…”

Section: Previous Approaches To Modelling Cfcsmentioning

confidence: 99%

Three‐dimensional finite‐element analysis multiphysics modelling of electromagnetic Joule heating in carbon fibre composites

Khan

Smith

Tuohy

et al. 2020

IET Electric Power Applications

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This study investigates the possibility of electromagnetic heating of carbon fibre composites (CFCs) to the resin curing temperature, utilising Joule heating, with the main potential application being the on‐site and in‐situ repair of damaged CFCs. The study describes the energy conversion from the supplied AC electrical current to the power generated and hence, heat produced in a CFC. This is investigated through the development of three‐dimensional (3D) finite‐element multiphysics models using a homogenous representation approach, which can represent single‐ and multi‐layer CFC lay‐ups. An experimental test‐rig is used to validate the 3D finite‐element models for both unidirectional and quasi‐isotropic CFCs. Both the numerical simulations and experimental results are in good agreement. The presented results show that electromagnetic induced Joule heating can be used to achieve resin curing temperatures in CFCs for potential applications such as in‐situ repair.

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Interaction Between Electromagnetic Field and CFRP Materials: A New Multiscale Homogenization Approach

Cited by 45 publications

References 5 publications

Dielectric properties of continuous fiber reinforced polymer composites: Modeling, validation, and application

Dielectric properties of continuous fiber reinforced polymer composites: Modeling, validation, and application

Investigation of factors contributing depolarization in offset reflector antenna and trimmed-reflector offset parabolic antenna with lower cross-polarization

Three‐dimensional finite‐element analysis multiphysics modelling of electromagnetic Joule heating in carbon fibre composites

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