Evaluation of a simple finite element method for the calculation of effective electrical conductivity of compression moulded polymer–graphite composites

Scocchi, Giulio; Ortona, Alberto; Grossi, Loris; Bianchi, Giovanni; D’Angelo, Claudio; Leidi, Tiziano; Gilardi, Raffaele

doi:10.1016/j.compositesa.2012.12.013

Cited by 12 publications

(5 citation statements)

References 44 publications

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“…The pore-size dependence of conductivity behavior is often observed in cellular materials as the network is better interconnected in the more dense samples. 32,33 However, there is an additional variable in our system since SP aerogels were synthesized using a water/MeCN solvent mixture as opposed to purely water in LP and MP samples. Solvent environment can often have a drastic effect on the phase separation of PEDOT and PSS, which leads to different electrical properties.…”

Section: Resultsmentioning

confidence: 99%

Strain- and Strain-Rate-Invariant Conductance in a Stretchable and Compressible 3D Conducting Polymer Foam

Chen

Rastak

Wang

et al. 2019

Matter

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A stretchable conductor is a crucial component required as electrodes for signal probing or interconnects between various electrical components in stretchable electronics. Current approaches for stretchable conductors use strain engineering or composite materials. Here, we demonstrate a conducting polymer foam in which strain-and strain-rate-invariant conductance and compliance are synergistically engineered into a singular entity. The cellular nature of the materials also provides accommodation for both compressive and tensile strains while offering breathability, which opens up new possibilities for stretchable conductors.

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Section: Resultsmentioning

confidence: 99%

Strain- and Strain-Rate-Invariant Conductance in a Stretchable and Compressible 3D Conducting Polymer Foam

Chen

Rastak

Wang

et al. 2019

Matter

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“…FEA is also useful for calculating the effective electrical conductivity of composite materials, taking into account their microstructures, as highlighted in references 32,33 . For the above mesh models, resistivity defined by Eqs (3) to ( 6) was assigned to each element.…”

Section: Finite Element Analysis (Fea)mentioning

confidence: 99%

Materials Informatics Approach to Cu/Nb Nanolaminate Microstructure Correlations with Yield Strength and Electrical Conductivity

Shiraiwa,

Yasuda,

Briffod

et al. 2024

Mater. Trans.

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Empirical formulas were derived for the interface shape, mechanical properties, and electrical characteristics of accumulative roll bonded (ARB) Cu/Nb laminated materials, based on relevant literature data. These formulas were incorporated into a forward analysis model using finite element analysis, enabling the calculation of yield stress and conductivity from the spatial distribution of Cu/Nb two phases. By randomly varying the layer thickness and interface shape in the two-phase spatial distribution and conducting repeated forward analyses, a database linking microstructural descriptors with yield stress and conductivity was created. These microstructural descriptors include volume fraction, geometric features, topological features, spatial correlation functions, and persistent homology. The significance of each microstructural descriptor on yield stress and conductivity was quantified using machine learning techniques. The results revealed that the Cu volume fraction, layer thickness, and 0th Betti number are crucial for yield stress, while for conductivity, the Cu volume fraction has the strongest influence, followed by layer thickness and layer continuity. Based on these outcomes, the Pareto front for ARB Cu/Nb laminates in the strength-conductivity space was presented.

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“…The film conductivity 𝜎 "#46 B is computed by a finite-element method as described in detail elsewhere, [56,57] thanks to an electrical module integrated into NASCAM. The Ag layer simulated with NASCAM is divided into small 3D elements for which each corner of the mesh is an atom.…”

Section: Electrical Conductivity Computationmentioning

confidence: 99%

Low-E glass improvement by the understanding and control of the Ag growth

Bocchese

Iain²,

Cornil³

et al. 2023

Applied Surface Science

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Evaluation of a simple finite element method for the calculation of effective electrical conductivity of compression moulded polymer–graphite composites

Cited by 12 publications

References 44 publications

Strain- and Strain-Rate-Invariant Conductance in a Stretchable and Compressible 3D Conducting Polymer Foam

Strain- and Strain-Rate-Invariant Conductance in a Stretchable and Compressible 3D Conducting Polymer Foam

Materials Informatics Approach to Cu/Nb Nanolaminate Microstructure Correlations with Yield Strength and Electrical Conductivity

Low-E glass improvement by the understanding and control of the Ag growth

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