TY - CONF A1 - Bruno, Giovanni A1 - Ehrig, Karsten A1 - Haarring, Holger A1 - Harwardt, Michael A1 - Hentschel, Manfred P. A1 - Illerhaus, Bernhard A1 - Kupsch, Andreas A1 - Lange, Axel A1 - Meinel, Dietmar A1 - Müller, Bernd R. A1 - Onel, Yener A1 - Staude, Andreas A1 - Wolk, Thomas T1 - Industrial and synchrotron X-ray CT applications for materials characterisation T2 - Conference on Industrial Computed Tomography (ICT) 2014 - Proceedings N2 - The combination of tomographic, microstructural data with other experimental techniques and with modeling is paramount, if we want to extract the maximum amount of information on material and component properties. In particular, quantitative image analysis, statistical approaches, direct discretization of tomographic reconstructions represent concrete possibilities to extend the power of the tomographic 3D representation to insights into the material and component performance. This logic thread holds equally for industrial and academic research, and valorizes expensive experiments such as those carried out at synchrotron sources, which cannot be daily repeated. We shall show a few examples of possible use of X-ray tomographic data for quantitative assessment of damage evolution and microstructural properties, as well as for non-destructive testing. We will also show how X-ray refraction computed tomography (CT) can be highly complementary to classic absorption CT, being sensitive to internal interfaces. T2 - iCT Conference 2014 - Conference on industrial computed tomography CY - Wels, Austria DA - 25.02.2014 KW - X-ray absorption and refraction CT KW - Quantitative image analysis KW - Statistical analysis KW - Complex microstructure PY - 2014 SN - 978-3-8440-2557-6 SP - 15 EP - 31 PB - Shaker CY - Aachen AN - OPUS4-30484 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Kupsch, Andreas A1 - Lange, Axel A1 - Hentschel, Manfred P. A1 - Onel, Yener A1 - Wolk, Thomas A1 - Staude, Andreas A1 - Ehrig, Karsten A1 - Müller, Bernd R. A1 - Bruno, Giovanni T1 - Evaluating porosity in cordierite diesel particulate filter materials: advanced X-ray techniques and new statistical analysis methods JF - Advances in science and technology N2 - Bi-continuous porous ceramics for filtration applications possess a particularly complicated microstructure, whereby porosity and solid matter are intermingled. Mechanical, thermal, and filtration properties can only be precisely estimated if the morphology of both solid matter and porosity can be quantitatively determined. Using 3D computed tomography (CT) at different resolutions, and several X-ray refraction-based techniques, we quantitatively evaluated porosity and pore orientation in cordierite diesel particulate filter ceramics.Moreover, applying both Fast Fourier Transform (FFT) and a newly developed image analysis algorithm (directional interface variance analysis, DIVA), we quantitatively evaluated porosity and pore orientation. Both the experimental techniques and the statistical approach allow extraction of spatially resolved or average values.Porosity values from synchrotron computed tomography used turn out to agree with mercury intrusion measurements, while pore orientation factors agree with published crystallographic texture data. This latter point also implies that the study of the pore/matter interface is sufficient to describe the morphological properties of these materials. KW - Diesel particulate filters KW - DIVA Algorithm KW - Pore Orientation KW - Porous Ceramics KW - X-Ray Computed Tomography KW - X-Ray Refraction PY - 2014 DO - https://doi.org/10.4028/www.scientific.net/AST.91.64 SN - 1662-0356 VL - 91 SP - 64 EP - 69 PB - Techna CY - Faenza AN - OPUS4-32069 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kupsch, Andreas A1 - Lange, Axel A1 - Hentschel, Manfred P. A1 - Bruno, Giovanni A1 - Onel, Yener A1 - Wolk, Thomas A1 - Staude, Andreas A1 - Ehrig, Karsten A1 - Müller, Bernd R. T1 - Evaluating porosity in cordierite diesel particulate filter materials: advanced X-ray techniques and new statistical analysis methods T2 - ECNDT 2014 - 11th European conference on non-destructive testing (Proceedings) T2 - ECNDT 2014 - 11th European conference on non-destructive testing CY - Prague, Czech Republic DA - 2014-10-06 KW - Porous ceramics KW - Diesel particulate filters KW - Pore orientation KW - X-ray computed tomography KW - X-ray refraction KW - DIVA algorithm KW - Phase contrast KW - Edge artefact KW - Soft matter radiography KW - Wavelet transform KW - Huygens elementary waves PY - 2014 SN - 978-80-214-5018-9 SP - 1 EP - 8(?) AN - OPUS4-31973 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -