High Resolution 3d Reconstructions of Rocks and Composites
| Autor: | R. Ferreira De Paiva, John Lynch, Michel Bisiaux, Elisabeth Rosenberg, P. Gueroult |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 1999 |
| Předmět: |
Microprobe
Orientation (computer vision) General Chemical Engineering Attenuation Resolution (electron density) Microscanner Energy Engineering and Power Technology Mineralogy Electron microprobe lcsh:Chemical technology lcsh:HD9502-9502.5 Sample (graphics) lcsh:Energy industries. Energy policy. Fuel trade Fuel Technology lcsh:TP1-1185 Thin film Composite material Geology |
| Zdroj: | Oil & Gas Science and Technology, Vol 54, Iss 4, Pp 497-511 (1999) |
| ISSN: | 1294-4475 |
| Popis: | High Resolution 3D Reconstructions of Rocks and Composites — Ten µm resolution 3D representations of different media, were obtained with a laboratory computer microtomograph develo - ped from an electron microprobe column. From the original electron microprobe, only minor modifica - tions have been required, indeed several of the utilities of the microprobe have been used to ensure high resolution radiography (2 µm). The impact of the electron beam focused onto a thin film is used to form a "point" X-ray source and the radiographic image of the sample is acquired on a CCD camera. A speci - men rotation mechanism allows multiple radiograph acquisition and reconstruction of the X-ray attenua - tion 3D cartography. Since X-ray attenuation is directly related to density and atomic number, the microscanner provides 3D cartographs of the different phases present in the sample. System perfor - mances have been evaluated on various samples, mainly rocks and composites. Comparison with scan - ning electron micrographs was used when possible to validate the reconstructions. Results are mostly qualitative but already show the potential of the technique in describing 3D connectivity and topology of pore networks or 3D orientation of fibres in composites. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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