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Reconstructing intr...
Reconstructing intragranular strain fields in polycrystalline materials from scanning 3DXRD data
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- Henningsson, N. Axel (author)
- Lund University,Lunds universitet,Hållfasthetslära,Institutionen för byggvetenskaper,Institutioner vid LTH,Lunds Tekniska Högskola,Solid Mechanics,Department of Construction Sciences,Departments at LTH,Faculty of Engineering, LTH
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- Hall, Stephen A. (author)
- Lund University,Lunds universitet,Hållfasthetslära,Institutionen för byggvetenskaper,Institutioner vid LTH,Lunds Tekniska Högskola,LINXS - Institute of advanced Neutron and X-ray Science,Kemiska institutionen,Solid Mechanics,Department of Construction Sciences,Departments at LTH,Faculty of Engineering, LTH,Department of Chemistry,Faculty of Engineering, LTH
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- Wright, Jonathan P. (author)
- European Synchrotron Radiation Facility
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- Hektor, Johan (author)
- Helmholtz-Zentrum Geesthacht,German Electron Synchrotron (DESY)
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(creator_code:org_t)
- 2020
- 2020
- English 12 s.
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In: Journal of Applied Crystallography. - 0021-8898. ; 53, s. 314-325
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Abstract
Subject headings
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- Two methods for reconstructing intragranular strain fields are developed for scanning three-dimensional X-ray diffraction (3DXRD). The methods are compared with a third approach where voxels are reconstructed independently of their neighbours [Hayashi, Setoyama & Seno (2017). Mater. Sci. Forum, 905, 157-164]. The 3D strain field of a tin grain, located within a sample of approximately 70 grains, is analysed and compared across reconstruction methods. Implicit assumptions of sub-problem independence, made in the independent voxel reconstruction method, are demonstrated to introduce bias and reduce reconstruction accuracy. It is verified that the two proposed methods remedy these problems by taking the spatial properties of the inverse problem into account. Improvements in reconstruction quality achieved by the two proposed methods are further supported by reconstructions using synthetic diffraction data.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Medicinteknik -- Medicinsk bildbehandling (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Medical Engineering -- Medical Image Processing (hsv//eng)
Keyword
- 3DXRD
- intragranular strain
- tomography
- X-ray diffraction
Publication and Content Type
- art (subject category)
- ref (subject category)
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