Thermal conductivity computations of sintered hollow sphere structures
The thermal conductivity of sintered hollow sphere structures (HSS) is investigated within the scope of this paper. For this purpose, finite element analyses based on micro-computed tomography images are performed on HSS structures. The complex geometry of the real sintered HSS sample is accurately...
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| Format: | Article |
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MDPI
2012
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| _version_ | 1796856649388916736 |
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| author | Veyhl, Christoph Fiedler, Thomas Herzig, Tobias Öchsner, Andreas Bernthaler, Timo V. Belova, Irina E. Murch, Graeme |
| author_facet | Veyhl, Christoph Fiedler, Thomas Herzig, Tobias Öchsner, Andreas Bernthaler, Timo V. Belova, Irina E. Murch, Graeme |
| author_sort | Veyhl, Christoph |
| collection | ePrints |
| description | The thermal conductivity of sintered hollow sphere structures (HSS) is investigated within the scope of this paper. For this purpose, finite element analyses based on micro-computed tomography images are performed on HSS structures. The complex geometry of the real sintered HSS sample is accurately captured with this new hybrid method. The numerical computations are investigated in three perpendicular directions (i.e., x, y and z) in order to examine the anisotropic material behaviour. The results indicate that sintered HSS reveals quasi-isotropic behaviour in terms of effective thermal conductivity. For the first time, the influence of the sphere wall thickness of real HSS is investigated. To this end, the computed tomography data is carefully manipulated by changing the thickness of the hollow sphere wall. The variation of the wall thickness alters the relative density and has a significant influence on the thermal conductivity. The influence of the relative density on the thermal conductivity reveals a linear dependency. |
| first_indexed | 2024-03-05T18:46:16Z |
| format | Article |
| id | utm.eprints-29975 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-03-05T18:46:16Z |
| publishDate | 2012 |
| publisher | MDPI |
| record_format | dspace |
| spelling | utm.eprints-299752017-10-23T16:15:12Z http://eprints.utm.my/29975/ Thermal conductivity computations of sintered hollow sphere structures Veyhl, Christoph Fiedler, Thomas Herzig, Tobias Öchsner, Andreas Bernthaler, Timo V. Belova, Irina E. Murch, Graeme TJ Mechanical engineering and machinery The thermal conductivity of sintered hollow sphere structures (HSS) is investigated within the scope of this paper. For this purpose, finite element analyses based on micro-computed tomography images are performed on HSS structures. The complex geometry of the real sintered HSS sample is accurately captured with this new hybrid method. The numerical computations are investigated in three perpendicular directions (i.e., x, y and z) in order to examine the anisotropic material behaviour. The results indicate that sintered HSS reveals quasi-isotropic behaviour in terms of effective thermal conductivity. For the first time, the influence of the sphere wall thickness of real HSS is investigated. To this end, the computed tomography data is carefully manipulated by changing the thickness of the hollow sphere wall. The variation of the wall thickness alters the relative density and has a significant influence on the thermal conductivity. The influence of the relative density on the thermal conductivity reveals a linear dependency. MDPI 2012 Article PeerReviewed Veyhl, Christoph and Fiedler, Thomas and Herzig, Tobias and Öchsner, Andreas and Bernthaler, Timo and V. Belova, Irina and E. Murch, Graeme (2012) Thermal conductivity computations of sintered hollow sphere structures. Metals, 2 . pp. 113-121. ISSN 2075-4701 http://www.mdpi.com/2075-4701/2/2/113 DOI:10.3390/met2020113 |
| spellingShingle | TJ Mechanical engineering and machinery Veyhl, Christoph Fiedler, Thomas Herzig, Tobias Öchsner, Andreas Bernthaler, Timo V. Belova, Irina E. Murch, Graeme Thermal conductivity computations of sintered hollow sphere structures |
| title | Thermal conductivity computations of sintered hollow sphere structures |
| title_full | Thermal conductivity computations of sintered hollow sphere structures |
| title_fullStr | Thermal conductivity computations of sintered hollow sphere structures |
| title_full_unstemmed | Thermal conductivity computations of sintered hollow sphere structures |
| title_short | Thermal conductivity computations of sintered hollow sphere structures |
| title_sort | thermal conductivity computations of sintered hollow sphere structures |
| topic | TJ Mechanical engineering and machinery |
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