TY - JOUR
T1 - Correlation of X-ray dark-field radiography to mechanical sample properties
AU - Malecki, Andreas
AU - Eggl, Elena
AU - Schaff, Florian
AU - Potdevin, Guillaume
AU - Baum, Thomas
AU - Garcia, Eduardo Grande
AU - Bauer, Jan S.
AU - Pfeiffer, Franz
PY - 2014/1/1
Y1 - 2014/1/1
N2 - The directional dark-field signal obtained with X-ray grating interferometry yields direction-dependent information about the X-ray scattering taking place inside the examined sample. It allows examination of its morphology without the requirement of resolving the micrometer size structures directly causing the scattering. The local morphology in turn gives rise to macroscopic mechanical properties of the investigated specimen. In this study, we investigate the relation between the biomechanical elasticity (Young's modulus) and the measured directional dark-field parameters of a well-defined sample made of wood. In our proof-of-principle experiment, we found a correlation between Young's modulus, the average dark-field signal, and the average dark-field anisotropy. Hence, we are able to show that directional dark-field imaging is a new method to predict mechanical sample properties. As grating interferometry provides absorption, phase-contrast, and dark-field data at the same time, this technique appears promising to combine imaging and mechanical testing in a single testing stage. Therefore, we believe that directional dark-field imaging will have a large impact in the materials science world.
AB - The directional dark-field signal obtained with X-ray grating interferometry yields direction-dependent information about the X-ray scattering taking place inside the examined sample. It allows examination of its morphology without the requirement of resolving the micrometer size structures directly causing the scattering. The local morphology in turn gives rise to macroscopic mechanical properties of the investigated specimen. In this study, we investigate the relation between the biomechanical elasticity (Young's modulus) and the measured directional dark-field parameters of a well-defined sample made of wood. In our proof-of-principle experiment, we found a correlation between Young's modulus, the average dark-field signal, and the average dark-field anisotropy. Hence, we are able to show that directional dark-field imaging is a new method to predict mechanical sample properties. As grating interferometry provides absorption, phase-contrast, and dark-field data at the same time, this technique appears promising to combine imaging and mechanical testing in a single testing stage. Therefore, we believe that directional dark-field imaging will have a large impact in the materials science world.
KW - average anisotropy
KW - directional dark-field imaging
KW - grating interferometry
KW - mechanical testing
KW - Young's modulus
UR - http://www.scopus.com/inward/record.url?scp=84910148223&partnerID=8YFLogxK
U2 - 10.1017/S1431927614001718
DO - 10.1017/S1431927614001718
M3 - Article
AN - SCOPUS:84910148223
VL - 20
SP - 1528
EP - 1533
JO - Microscopy and Microanalysis
JF - Microscopy and Microanalysis
SN - 1431-9276
IS - 5
ER -