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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Lionheart, William R. B.
University of Manchester
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (7/7 displayed)
- 2024Direct inversion of the Longitudinal Ray Transform for 2D residual elastic strain fieldscitations
- 2019Laminography in the Lab: Imaging planar objects using a conventional x-ray CT scannercitations
- 2007Analysis of the inverse problem for determining nematic liquid crystal director profiles from optical measurements using singular value decompositioncitations
- 2006Electromagnetic visualisation of steel flow in continuous casting nozzlescitations
- 2006A three-dimensional inverse finite-element method applied to experimental eddy-current imaging datacitations
- 2005Nonlinear image reconstruction for electrical capacitance tomography using experimental datacitations
- 2003Development of a sensor for visualization of steel flow in the continuous casting nozzlecitations
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article
Laminography in the Lab: Imaging planar objects using a conventional x-ray CT scanner
Abstract
Whilst x-ray micro Computed Tomography (CT) machines have developed into a popular laboratory tool for non-destructive 3D imaging of materials, they are not well-suited for scanning flat objects for which there is an increasing demand. Computed Laminography (CL) techniques have been developed for imaging planar samples such as fossils, paintings, printed circuit boards and composite panels. This paper is the first work demonstrating how CL may be implemented on a conventional industrial laboratory micro-CT scanner, without the need for specialist equipment. A rotary CL scan configuration (also known as tilted or oblique CT) was successfully implemented, and the projection images reconstructed using the Conjugate Gradient Least Squares (CGLS) method. Computer simulations were used to analyse the causes of image artefacts seen in the cone-beam CL reconstructions, and to devise corrections for them. The resulting laboratory CL method produces reconstructions with fewer artefacts and a more isotropic resolution compared to limited-angle scan configurations otherwise used for planar samples. This demonstrates that CL can be performed in the laboratory without specialist equipment beyond that required for standard CT.