Image based in silico characterisation of the effective thermal properties of a graphite foam

Evans, Llion; Margetts, Lee; Lee, Peter; Butler, Celia A. M.; Surrey, E.

doi:10.1016/j.carbon.2018.10.031

Cited by 9 publications

(13 citation statements)

References 35 publications

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“…This value can reflect the impact of the microstructure on the migration of contaminants. In general, the tortuosity is defined as the ratio of the length of the actual transport path to the straight distance between two points (Evans et al, 2019):…”

Section: Resultsmentioning

confidence: 99%

“…Chung et al (2019) applied XRT to determine the microstructures of lightweight concrete and show their properties. Evans et al (2019) reconstructed the microstructure of a graphite foam via XRT to analyze the effective thermal properties. Ferguson et al (2016, 2017) characterized the geometry of fibrous carbon through XRT and simulated the oxidation process.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Three-dimensional geometry, pore parameter, and fractal characteristic analyses of medium-density fiberboard by X-ray tomography, coupling with scanning electron microscopy and mercury intrusion porosimetry

Shao

Guo

et al. 2020

Journal of Building Physics

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Pore structure parameters are significant for investigating the diffusion properties of volatile organic compounds from building materials. Traditional characterization methods could provide ether surface morphology or some pore parameters of the material, which could not comprehensively reflect the overall information. X-ray tomography, as an advanced nondestructive method, can not only characterize the three-dimensional structure characteristics but also comprehensively measure pore parameters of materials. This study applied X-ray tomography to systematically analyze the geometry and volatile organic compound emission paths of medium-density fiberboard. The three-dimensional structures of pores and materials were reconstructed respectively. The isolated pores and connective pores were extracted to indicate the pore connectivity, and skeletonization was simultaneously applied, allowing visualization of the volatile organic compound diffusion paths. The porosity was 54.67%, and 99.91% of the pores were connective pores. The tortuosity was 2.07, and the fractal dimension was 2.605, indicating the heterogeneity and self-similarity of pore structures. Scanning electron microscopy was used to characterize the two-dimensional morphology of the material, and mercury intrusion porosimetry was applied to analyze the pore parameters. The results were consistent with that of X-ray tomography, and their coupling with X-ray tomography could comprehensively characterize the structures and parameters of indoor building materials, which could contribute significantly to future research on volatile organic compound emission mechanisms and building physics.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Three-dimensional geometry, pore parameter, and fractal characteristic analyses of medium-density fiberboard by X-ray tomography, coupling with scanning electron microscopy and mercury intrusion porosimetry

Shao

Guo

et al. 2020

Journal of Building Physics

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“…The thermal diffusivity (or conductivity) of SiC composite constituents is available in literature [11,12]. Similar boundary conditions and modeling assumptions adopted by Evans [8,13] are going to be implemented in this research. In general, these boundary conditions consist of applying a thermal load at the top of the geometry that corresponds to the laser power.…”

Section: Finite Element Methods Modelmentioning

confidence: 99%

Development of a Modeling Approach to Describe Thermal Conductivity of Prototypic SiC-SiC tubes for LWR Fuel Cladding

Arregui-Mena¹,

Koyanagi²,

Wang³

et al. 2019

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SiC/SiC composites are a promising material intended to be used as a fuel cladding for light water reactors. This material has exceptional steam oxidation resistance, outstanding high temperature strength, and small neutron cross sections. Thermal conductivity is one of the most important physical properties for modeling and assessment for the performance of SiC/SiC composite-cladded fuels. However, there is a significant lack of knowledge for thermal conductivity of tube materials because of the variability of thermal conductivity with the architecture and manufacturing quality of SiC-SiC composites, the challenge associated with measurement with small diameter tubes, and the complex nature of the effects of neutron irradiation on transport properties of composite materials. Development of a constitutive model of the composite thermal conductivity incorporating the effects of temperature, neutron irradiation, and potential matrix damages is essential toward a comprehensive performance modeling for the SiC-SiC composite-cladded fuels. As such, the current effort focuses on establishing a highfidelity thermal conductivity model for SiC-SiC composite cladding.

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“…Past NDE research efforts worth highlighting given close links to the vision of NDE 4.0, without necessarily having been carried out in that context, include work on modelassisted probability of detection (MAPOD) [17], model-assisted inspection qualification [18][19][20], model-assisted data analysis [21][22], inspection optimization [23], data fusion [24], as well as inspection-based simulation [25][26][27] and machine leaning, even applied to a traditional, "wet" inspection technique [28]. Work on advanced robotic inspection and un-conventional inspection delivery systems, including collaborative robots (cobots) and unmanned aerial vehicles / drones, are worth highlighting, too, performed especially by the research and technology organization TWI and Strathclyde University [4,[29][30].…”

Section: Past Nde Projects Relevant To Nde 40mentioning

confidence: 99%

Advances in the UK Toward NDE 4.0

Brierley

Smith

Turner

et al. 2020

Research in Nondestructive Evaluation

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In the UK, the NDE community is making a coordinated effort to underpin and enable the full benefits of the large-scale trend towards comprehensive digitalization and automation of industrial processes and assets, frequently referred to as "Industry 4.0". Certain facets of what is now considered to be NDE 4.0 have been the subject of research for some time and have already gained industrial traction, while others are quite new, with unexplored potential and pitfalls. However, in these areas there is scope for learning from progress in fields outside of, but related to, NDE such as dimensional metrology. This paper reviews progress to date based on UK activities, considers some planned and potential research tasks in this domain, and highlights the major challenges the NDE community must tackle. In particular, as interoperability and data reuse are key features of Industry 4.0 practices, international and cross-domain efforts on data format standardization are needed. It is clear that, without the NDE community stepping up to the challenge, much of Industry 4.0 cannot be realized; yet if the NDE 4.0 vision is implemented comprehensively, NDE has the potential to become more capable, more valuable, and therefore more highly valued.

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Image based in silico characterisation of the effective thermal properties of a graphite foam

Cited by 9 publications

References 35 publications

Three-dimensional geometry, pore parameter, and fractal characteristic analyses of medium-density fiberboard by X-ray tomography, coupling with scanning electron microscopy and mercury intrusion porosimetry

Three-dimensional geometry, pore parameter, and fractal characteristic analyses of medium-density fiberboard by X-ray tomography, coupling with scanning electron microscopy and mercury intrusion porosimetry

Development of a Modeling Approach to Describe Thermal Conductivity of Prototypic SiC-SiC tubes for LWR Fuel Cladding

Advances in the UK Toward NDE 4.0

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