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Detection of sub-pixel fractures in X-ray dark-field tomography

Lauridsen, Torsten; Willner, Marian; Bech, Martin LU ; Pfeiffer, Franz and Feidenhans'l, Robert (2015) In Applied Physics A: Materials Science & Processing 121(3). p.1243-1250
Abstract
We present a new method for detecting fractures in solid materials below the resolution given by the detector pixel size by using grating-based X-ray interferometry. The technique is particularly useful for detecting sub-pixel cracks in large samples where the size of the sample is preventing high-resolution mu CT studies of the entire sample. The X-ray grating interferometer produces three distinct modality signals: absorption, phase and dark field. The method utilizes the unique scattering features of the dark-field signal. We have used tomograms reconstructed from each of the three signals to detect cracks in a model sample consisting of stearin.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Applied Physics A: Materials Science & Processing
volume
121
issue
3
pages
1243 - 1250
publisher
Springer
external identifiers
  • wos:000364914100049
  • scopus:84947039559
ISSN
1432-0630
DOI
10.1007/s00339-015-9496-2
language
English
LU publication?
yes
id
a65cdd64-b1d6-48f3-982a-dcb9e9c0a7b4 (old id 8539579)
date added to LUP
2016-01-21 20:37:33
date last changed
2017-08-20 03:20:00
@article{a65cdd64-b1d6-48f3-982a-dcb9e9c0a7b4,
  abstract     = {We present a new method for detecting fractures in solid materials below the resolution given by the detector pixel size by using grating-based X-ray interferometry. The technique is particularly useful for detecting sub-pixel cracks in large samples where the size of the sample is preventing high-resolution mu CT studies of the entire sample. The X-ray grating interferometer produces three distinct modality signals: absorption, phase and dark field. The method utilizes the unique scattering features of the dark-field signal. We have used tomograms reconstructed from each of the three signals to detect cracks in a model sample consisting of stearin.},
  author       = {Lauridsen, Torsten and Willner, Marian and Bech, Martin and Pfeiffer, Franz and Feidenhans'l, Robert},
  issn         = {1432-0630},
  language     = {eng},
  number       = {3},
  pages        = {1243--1250},
  publisher    = {Springer},
  series       = {Applied Physics A: Materials Science & Processing},
  title        = {Detection of sub-pixel fractures in X-ray dark-field tomography},
  url          = {http://dx.doi.org/10.1007/s00339-015-9496-2},
  volume       = {121},
  year         = {2015},
}