TY - JOUR A1 - Butz, Marcus A1 - Goebbels, Jürgen A1 - Dietrich, H.-G. A1 - Fritz, L. A1 - Neuhaus, M. T1 - Schadensfall Parchim: Drucksondierungen und Computertomographie - integrale Methoden zur Erkundung Mineralölkohlenwasserstoff-kontaminierter Lockersedimente KW - Drucksondierung KW - Mineralölkohlenwasserstoff-Kontamination KW - In situ-Erkundung KW - Gesteinstomographie KW - Parchim PY - 2000 SN - 0044-2259 VL - 46 IS - 2 SP - 84 EP - 90 PB - Schweizerbart CY - Stuttgart AN - OPUS4-955 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Goebbels, Jürgen T1 - Computed Tomography in NDT of Materials PY - 2000 SP - 1(?) EP - 9(?) PB - Pergamon Press CY - Amsterdam AN - OPUS4-844 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Rabe, Torsten A1 - Goebbels, Jürgen A1 - Weidemann, Gerd A1 - Riesemeier, Heinrich A1 - Rudert, Rainer T1 - Green Body Characterization by Computed Tomography with Synchrotron Radiation T2 - Symposium Grünkörpercharakterisierung ; 8. Keramik-Tag der BAM CY - Berlin, Germany DA - 2001-05-28 PY - 2001 SN - 0177-6983 VL - 16 IS - 2 SP - 204 EP - 210 PB - Bauverlag CY - Bad Honnef AN - OPUS4-1835 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Goebbels, Jürgen A1 - Klobes, Peter A1 - Bartels, J. A1 - Dietrich, H.-G. T1 - Analyse natürlicher Wegsamkeiten und ihrer Stimulationsmöglichkeiten in einem zementierten Aquifer durch Kombination von Röntgen-CT mit Quecksilberporosimetrie KW - Quecksilberporosimetrie KW - Computertomographie KW - Geothermie KW - Stimulation KW - Anhydritzement KW - Rhätsandstein KW - Allermöhe PY - 2000 SN - 0044-2259 N1 - Sprachen: Deutsch/Englisch - Languages: German/English VL - 46 IS - 3 SP - 153 EP - 156 PB - Schweizerbart CY - Stuttgart AN - OPUS4-1037 LA - mul AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Berger, Wolfgang A1 - Kalbe, Ute A1 - Goebbels, Jürgen T1 - Gefügeuntersuchungen an schadstoffbelasteten Deponiebasisabdichtungen KW - Deponieabdichtung KW - Gefügeuntersuchungen KW - Mineralische Dichtung PY - 1999 SN - 0343-107x VL - 91 IS - 3 SP - 1371 EP - 1374 PB - Deutsche Bodenkundliche Gesellschaft CY - Göttingen AN - OPUS4-747 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Berger, Wolfgang A1 - Kalbe, Ute A1 - Goebbels, Jürgen T1 - Fabric studies on contaminated mineral layers in composite liners N2 - The fabric of mineral liner materials that had been exposed to organic compounds over a 12-year period was investigated as part of a wider research project. Macromorphological and micromorphological changes in the fabric were identified using computed tomography and polarisation microscopy. Special care was taken to ensure artefact free sampling and sample preparation, in particular, the drying method used, has a substantial influence on the quality of the thin sections. Fabric changes due to contaminant permeation over several years are, by and large, relatively small and their intensity is material specific. Silty clay CML1, in particular, contains a somewhat greater number of fissures and voids in comparison with the original material. The superposition of various processes in both test procedures and sample preparation may lead to fabric changes which can impede interpretation of the results. KW - Composite liner system KW - Mineral layer KW - Microfabric KW - Macrofabric KW - Computed tomography KW - Microscopy PY - 2002 U6 - https://doi.org/10.1016/S0169-1317(01)00095-3 SN - 0169-1317 SN - 1872-9053 VL - 21 IS - 1-2 SP - 89 EP - 98 PB - Elsevier CY - Amsterdam AN - OPUS4-1351 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Rabe, Torsten A1 - Rudert, Rainer A1 - Goebbels, Jürgen A1 - Harbich, Karl-Wolfram T1 - Nondestructive Evaluation of Green Components PY - 2003 SN - 0002-7812 VL - 82 IS - 3 SP - 27 EP - 32 PB - American Ceramic Society CY - Westerville, Ohio AN - OPUS4-2376 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Rabe, Torsten A1 - Mücke, Udo A1 - Harbich, Karl-Wolfram A1 - Goebbels, Jürgen T1 - Alternative Verfahren zum Nachweis von Porositätsunterschieden - Untersuchungen an SiC-Grün- und -Sinterkörpern PY - 1997 SN - 0173-9913 SN - 0196-6219 VL - 74 IS - 1 SP - 38 EP - 43 PB - Göller CY - Baden-Baden AN - OPUS4-3666 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Tomandl, G. A1 - Mangler, M. A1 - Stoyan, D. A1 - Tscheschel, A. A1 - Goebbels, Jürgen A1 - Weidemann, Gerd T1 - Characterization methods for functionally graded materials N2 - In this paper the characterisation of functionally graded materials is elucidated by several different methods. These methods described here are used for the quantitative analysis of materials with a local dependence of microstructure parameters. Using X-ray microscopy (computed tomography) for 3D-measurements and optical microscopy on polished sections for 1D and 2D measurements on the same sample, a ceramic filter consisting of sintered spherical particles, various mathematical evaluation methods are described and compared. KW - Functionally graded materials KW - Computed tomography KW - X-ray microscopy KW - Optical microscopy KW - Ceramics PY - 2006 U6 - https://doi.org/10.1007/s10853-006-6632-6 SN - 0022-2461 SN - 1573-4803 VL - 41 IS - 13 SP - 4143 EP - 4151 PB - Springer Science + Business Media B.V. CY - Norwell, Mass. AN - OPUS4-13722 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Bernhardt, R. A1 - Scharnweber, D. A1 - Müller, B. A1 - Thurner, P. A1 - Schliephake, K. A1 - Wyss, P. A1 - Beckmann, F. A1 - Goebbels, Jürgen A1 - Worch, H. T1 - Comparison of microfocus- and synchrotron X-ray tomography for the analysis of osteointegration around T16AL4V-implants N2 - Micro-computed tomography (µCT) provides quantitative three-dimensional information of bone around titanium implants similar to classical histology. The study, based on an animal model, using cuboid-shaped biofunctionalised Ti6Al4V implants with surrounding bone after 4 weeks, is performed using 3 µCT-systems with X-ray tubes, one synchrotron-radiation-based µCT-system (SRµCT), and classical histology. Although the spatial resolution of the µCTsystems is comparable, only the results of SRµCT agree with results of classical histology. The X-ray tube sources give rise to huge artefacts in the tomograms (interface scattering, beam hardening), which impaired the quantitative analysis of bone up to about 200 µm from the implant surface. Due to the non-destructive character of µCT the specimens can be subsequently examined by classical histology without restriction. The quantitative comparison of bone formation uncovers the strong dependence of the detected amount of newly formed bone from the selected slice. This implies the necessity of 3D analysis. SRµCT and classical histology prove that surface modifications of the titanium implant significantly influence the bone formation. Using SRµCT, the preparation artefacts due to cutting and polishing are excluded. KW - X-ray micro computed tomography KW - Comparison of microfocus and synchrotron radiation KW - Osteointegration KW - Surface modification of titanium implants KW - Histology KW - Bone segmentation KW - Quantification of bone formation PY - 2004 UR - http://www.ecmjournal.org/journal/papers/vol007/vol007a05.php SN - 1473-2262 VL - 7 SP - 42 EP - 51 PB - Univ. of Wales CY - Aberystwyth, Wales AN - OPUS4-5600 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -