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Threshold fine-tuning and 3D characterisation of porous media using X-ray nanotomography
A common challenge in the X-ray nanotomography of porous media, such as fuel cell gas diffusion layers (GDLs), is to binarize nanotomography greyscale images in order to differentiate between solids and voids for structural characterisation and numerical flow analysis. In the process threshold deter...
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| Main Authors: | , , , , , |
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| Format: | Default Article |
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2010
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| Online Access: | https://hdl.handle.net/2134/8309 |
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| _version_ | 1818175056506781696 |
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| author | Hossein Ostadi Kyle Jiang Pratap Rama Yu Liu Rui Chen Xiaoxian Zhang |
| author_facet | Hossein Ostadi Kyle Jiang Pratap Rama Yu Liu Rui Chen Xiaoxian Zhang |
| author_sort | Hossein Ostadi (7121456) |
| collection | Figshare |
| description | A common challenge in the X-ray nanotomography of porous media, such as fuel cell gas diffusion layers (GDLs), is to binarize nanotomography greyscale images in order to differentiate between solids and voids for structural characterisation and numerical flow analysis. In the process threshold determination is critical. This paper presents a study on determination of and fine-tuning threshold value based on comparison of material porosity and average fibre diameter obtained from nanotomography images with porosity data from density experiments and average fibre diameter achieved from scanning electron microscopy images respectively. The more accurate 3D reconstructed model is then used to calculate pore size distribution and average pore size, while the gas permeability of the representative 3D binary images are calculated using a single phase Lattice Boltzmann (LB) model in the D3Q19 regime. |
| format | Default Article |
| id | rr-article-9226397 |
| institution | Loughborough University |
| publishDate | 2010 |
| record_format | Figshare |
| spelling | rr-article-92263972010-01-01T00:00:00Z Threshold fine-tuning and 3D characterisation of porous media using X-ray nanotomography Hossein Ostadi (7121456) Kyle Jiang (1410325) Pratap Rama (7119353) Yu Liu (6938) Rui Chen (1257861) Xiaoxian Zhang (1521013) Other engineering not elsewhere classified X-ray nanotomography Gas diffusion layer (GDL) Fuel cell Porous material Threshold Lattice Boltzmann (LB) Engineering not elsewhere classified A common challenge in the X-ray nanotomography of porous media, such as fuel cell gas diffusion layers (GDLs), is to binarize nanotomography greyscale images in order to differentiate between solids and voids for structural characterisation and numerical flow analysis. In the process threshold determination is critical. This paper presents a study on determination of and fine-tuning threshold value based on comparison of material porosity and average fibre diameter obtained from nanotomography images with porosity data from density experiments and average fibre diameter achieved from scanning electron microscopy images respectively. The more accurate 3D reconstructed model is then used to calculate pore size distribution and average pore size, while the gas permeability of the representative 3D binary images are calculated using a single phase Lattice Boltzmann (LB) model in the D3Q19 regime. 2010-01-01T00:00:00Z Text Journal contribution 2134/8309 https://figshare.com/articles/journal_contribution/Threshold_fine-tuning_and_3D_characterisation_of_porous_media_using_X-ray_nanotomography/9226397 CC BY-NC-ND 4.0 |
| spellingShingle | Other engineering not elsewhere classified X-ray nanotomography Gas diffusion layer (GDL) Fuel cell Porous material Threshold Lattice Boltzmann (LB) Engineering not elsewhere classified Hossein Ostadi Kyle Jiang Pratap Rama Yu Liu Rui Chen Xiaoxian Zhang Threshold fine-tuning and 3D characterisation of porous media using X-ray nanotomography |
| title | Threshold fine-tuning and 3D characterisation of porous media using X-ray nanotomography |
| title_full | Threshold fine-tuning and 3D characterisation of porous media using X-ray nanotomography |
| title_fullStr | Threshold fine-tuning and 3D characterisation of porous media using X-ray nanotomography |
| title_full_unstemmed | Threshold fine-tuning and 3D characterisation of porous media using X-ray nanotomography |
| title_short | Threshold fine-tuning and 3D characterisation of porous media using X-ray nanotomography |
| title_sort | threshold fine-tuning and 3d characterisation of porous media using x-ray nanotomography |
| topic | Other engineering not elsewhere classified X-ray nanotomography Gas diffusion layer (GDL) Fuel cell Porous material Threshold Lattice Boltzmann (LB) Engineering not elsewhere classified |
| url | https://hdl.handle.net/2134/8309 |